[mc] Use a probing approach to find Forge URL and launcher name

For #91 and #153

README.md

@@ -1,6 +1,10 @@
-dockerfiles
-===========
 
-Contains the various Dockerfile definitions I'm maintaining.
+This repository contains the various Dockerfile definitions I'm maintaining.
 
 [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/itzg/dockerfiles?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+
+### Discontinued
+
+##### Cassandra
+
+I have found the [official image](https://hub.docker.com/_/cassandra/) to be quite sufficient

build

@@ -5,10 +5,8 @@ pkgs="$pkgs minecraft-server"
 pkgs="$pkgs elasticsearch"
 pkgs="$pkgs kibana"
 pkgs="$pkgs titan-gremlin"
-pkgs="$pkgs cassandra"
 
 for p in $pkgs
 do
   docker build -t itzg/$p $p
 done
-

cassandra/Dockerfile

@@ -1,26 +0,0 @@
-FROM java:openjdk-8u72-jdk
-
-MAINTAINER itzg
-
-ENV CASSANDRA_VERSION 2.2.8
-
-ADD http://mirrors.ibiblio.org/apache/cassandra/$CASSANDRA_VERSION/apache-cassandra-$CASSANDRA_VERSION-bin.tar.gz /tmp/apache-cassandra.tgz
-RUN tar -C /opt -zxf /tmp/apache-cassandra.tgz && \
-  rm /tmp/apache-cassandra.tgz
-
-
-RUN mv /opt/apache-cassandra-$CASSANDRA_VERSION /opt/cassandra
-ENV CASSANDRA_HOME /opt/cassandra
-ENV CASSANDRA_CONF /conf
-ENV CASSANDRA_DATA /data
-WORKDIR $CASSANDRA_HOME
-
-RUN ln -s $CASSANDRA_HOME/bin/* /usr/local/bin
-VOLUME ["/data","/conf"]
-
-EXPOSE 9042 9160 7000 7001
-
-ADD cassandra.in.sh $CASSANDRA_HOME/cassandra.in.sh
-RUN mv $CASSANDRA_HOME/bin/cassandra.in.sh $CASSANDRA_HOME/bin/orig.cassandra.in.sh
-
-CMD ["/opt/cassandra/bin/cassandra", "-f"]

cassandra/README.md

@@ -1,9 +0,0 @@
-Yet another Cassandra image, but this one got container and non-container access right.
-
-# Basic Usage
-
-To support access from both Docker containers and external, non-Docker clients:
-
-    docker run -d --name cassandra -e PUBLISH_AS=192.168.59.103 -p 9160:9160 itzg/cassandra
-
-replacing `192.168.59.103` with your Docker host's LAN IP address.

cassandra/cassandra.in.sh

@@ -1,24 +0,0 @@
-#!/bin/bash
-
-cassYml=$CASSANDRA_HOME/conf/cassandra.yaml
-
-privateAddr=$(hostname -i)
-
-seeds=${SEEDS:-${PUBLISH_AS:-$privateAddr}}
-
-sed -i -e "s/- seeds:.*/- seeds: \"$seeds\"/" \
-  -e "s/listen_address:.*/listen_address: $privateAddr/" \
-  -e "s/rpc_address:.*/rpc_address: $privateAddr/" \
-  -e "s/start_rpc:.*/start_rpc: true/" \
-  -e "s#- /var/lib/cassandra/data#- $CASSANDRA_DATA#" \
-  $cassYml
-
-if [ -n "$PUBLISH_AS" ]; then
-  sed -i -e "s/\(\s*#\)\?\s*broadcast_address:.*/broadcast_address: $PUBLISH_AS/" $cassYml
-fi
-
-# Copy over our tweaked files, but non-clobbering to let user have ultimate control
-cp -rn $CASSANDRA_HOME/conf/* $CASSANDRA_CONF
-
-# source the original
-. $CASSANDRA_HOME/bin/orig.cassandra.in.sh

elasticsearch/Dockerfile

@@ -1,10 +1,10 @@
-FROM java:8u92-jre-alpine
+FROM openjdk:8u121-jre-alpine
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 RUN apk -U add bash
 
-ENV ES_VERSION=5.0.2
+ENV ES_VERSION=5.4.0
 
 ADD https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-$ES_VERSION.tar.gz /tmp/es.tgz
 RUN cd /usr/share && \
@@ -13,10 +13,10 @@ RUN cd /usr/share && \
 
 EXPOSE 9200 9300
 
+HEALTHCHECK --timeout=5s CMD wget -q -O - http://$HOSTNAME:9200/_cat/health
+
 ENV ES_HOME=/usr/share/elasticsearch-$ES_VERSION \
     DEFAULT_ES_USER=elasticsearch \
-    DISCOVER_TRANSPORT_IP=eth0 \
-    DISCOVER_HTTP_IP=eth0 \
     ES_JAVA_OPTS="-Xms1g -Xmx1g"
 
 RUN adduser -S -s /bin/sh $DEFAULT_ES_USER
@@ -25,6 +25,7 @@ VOLUME ["/data","/conf"]
 
 WORKDIR $ES_HOME
 
+COPY java.policy /usr/lib/jvm/java-1.8-openjdk/jre/lib/security/
 COPY start /start
 COPY log4j2.properties $ES_HOME/config/
 

elasticsearch/README.md

@@ -1,5 +1,10 @@
 This Docker image provides an easily configurable Elasticsearch node. Via port mappings, it is easy to create an arbitrarily sized cluster of nodes. As long as the versions match, you can mix-and-match "real" Elasticsearch nodes with container-ized ones.
 
+# NOTE for use on Linux hosts
+
+Elasticsearch 5.x requires that the virtual memory mmap count is set sufficiently for stable,
+production use. [Refer to this guide for more information](https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html).
+
 # Basic Usage
 
 To start an Elasticsearch data node that listens on the standard ports on your host's network interface:
@@ -49,6 +54,40 @@ and then check the cluster health, such as http://192.168.99.100:9200/_cluster/h
       "unassigned_shards" : 0
     }
 
+If you have a Docker Swarm cluster already initialized you can download this
+[docker-compose.yml](https://raw.githubusercontent.com/itzg/dockerfiles/master/elasticsearch/docker-compose.yml) and deploy a cluster using:
+
+    docker stack deploy -c docker-compose.yml es
+
+
+With a `docker service ls` you can confirm 1 master, 2 data, and 1 gateway nodes are running:
+
+```
+ID            NAME        MODE        REPLICAS  IMAGE
+9nwnno8hbqgk  es_kibana   replicated  1/1       kibana:latest
+f5x7nipwmvkr  es_gateway  replicated  1/1       es
+om8rly2yxylw  es_data     replicated  2/2       es
+tdvfilj370yn  es_master   replicated  1/1       es
+```
+
+As you can see, there is also a Kibana instance included and available at port 5601.
+
+# Health Checks
+
+This container declares a [HEALTHCHECK](https://docs.docker.com/engine/reference/builder/#/healthcheck) that queries the `_cat/health`
+endpoint for a quick, one-line gauge of health every 30 seconds.
+
+The current health of the container is shown in the `STATUS` column of `docker ps`, such as
+
+    Up 14 minutes (healthy)
+
+You can also check the history of health checks from `inspect`, such as:
+
+```
+> docker inspect -f "{{json .State.Health}}" es
+{"Status":"healthy","FailingStreak":0,"Log":[...
+```
+
 # Configuration Summary
 
 ## Ports
@@ -142,12 +181,13 @@ To simplify all that, this image provides a `TYPE` variable to let you amongst t
 * `MASTER` : master-eligible, but holds no data. It is good to have three or more of these in a
 large cluster
 * `DATA` (or `NON_MASTER`) : holds data and serves search/index requests. Scale these out for elastic-y goodness.
-* `GATEWAY` : only operates as a client node or a "smart router". These are the ones whose HTTP port 9200 will need to be exposed
+* `GATEWAY` (or `COORDINATING`) : only operates as a client node or a "smart router". These are the ones whose HTTP port 9200 will need to be exposed
+* `INGEST` : operates only as an ingest node and is not master or data eligble
 
 A [Docker Compose](https://docs.docker.com/compose/overview/) file will serve as a good example of these three node types:
 
 ```
-version: '2'
+version: '3'
 
 services:
   gateway:
@@ -170,6 +210,14 @@ services:
     environment:
       UNICAST_HOSTS: master,gateway
       TYPE: DATA
+
+  kibana:
+    image: kibana
+    ports:
+      - "5601:5601"
+    environment:
+      ELASTICSEARCH_URL: http://gateway:9200
+
 ```
 
 ## Minimum Master Nodes
@@ -182,21 +230,17 @@ Using the Docker Compose file above, a value of `2` is appropriate when scaling
 
     docker-compose scale master=3
 
-## Auto transport/http discovery with Swarm Mode
+## Multiple Network Binding, such as Swarm Mode
 
-When using Docker Swarm mode (starting with 1.12), the overlay and ingress network interfaces are assigned
-multiple IP addresses. As a result, it creates confusion for the transport publish logic even when using
-the special value `_eth0_`.
+When using Docker Swarm mode the container is presented with multiple ethernet
+devices. By default, all global, routable IP addresses are configured for
+Elasticsearch to use as `network.host`.
 
-To resolve this, add
+That discovery can be overridden by providing a specific ethernet device name
+to `DISCOVER_TRANSPORT_IP` and/or `DISCOVER_HTTP_IP`, such as
 
     -e DISCOVER_TRANSPORT_IP=eth0
-
-replacing `eth0` with another interface within the container, if needed.
-
-The same can be done for publish/binding of the http module by adding:
-
-    -e DISCOVERY_HTTP_IP=eth2
+    -e DISCOVER_HTTP_IP=eth2
 
 ## Heap size and other JVM options
 

elasticsearch/docker-compose-localbuild.yml

@@ -0,0 +1,44 @@
+version: '3'
+
+services:
+  master:
+    build: .
+    environment:
+      TYPE: MASTER
+      UNICAST_HOSTS: master
+      MIN_MASTERS: 1
+    deploy:
+      replicas: 1
+      update_config:
+        parallelism: 1
+  data:
+    build: .
+    environment:
+      TYPE: DATA
+      UNICAST_HOSTS: master
+    deploy:
+      replicas: 2
+      update_config:
+        parallelism: 1
+        delay: 60s
+  gateway:
+    build: .
+    ports:
+      - "9200:9200"
+      - "9300:9300"
+    environment:
+      TYPE: GATEWAY
+      UNICAST_HOSTS: master
+  ingest:
+    build: .
+    ports:
+      - "9222:9200"
+    environment:
+      TYPE: INGEST
+      UNICAST_HOSTS: master
+  kibana:
+    image: kibana
+    ports:
+      - "5601:5601"
+    environment:
+      ELASTICSEARCH_URL: http://gateway:9200

elasticsearch/docker-compose.yml

@@ -0,0 +1,44 @@
+version: '3'
+
+services:
+  master:
+    image: itzg/elasticsearch
+    environment:
+      TYPE: MASTER
+      UNICAST_HOSTS: master
+      MIN_MASTERS: 1
+    deploy:
+      replicas: 1
+      update_config:
+        parallelism: 1
+  data:
+    image: itzg/elasticsearch
+    environment:
+      TYPE: DATA
+      UNICAST_HOSTS: master
+    deploy:
+      replicas: 2
+      update_config:
+        parallelism: 1
+        delay: 60s
+  gateway:
+    image: itzg/elasticsearch
+    ports:
+      - "9200:9200"
+      - "9300:9300"
+    environment:
+      TYPE: GATEWAY
+      UNICAST_HOSTS: master
+  ingest:
+    image: itzg/elasticsearch
+    ports:
+      - "9222:9200"
+    environment:
+      TYPE: INGEST
+      UNICAST_HOSTS: master
+  kibana:
+    image: kibana
+    ports:
+      - "5601:5601"
+    environment:
+      ELASTICSEARCH_URL: http://gateway:9200

elasticsearch/java.policy

@@ -0,0 +1,6 @@
+grant {
+  // JMX Java Management eXtensions
+  permission javax.management.MBeanTrustPermission "register";
+  permission javax.management.MBeanServerPermission "createMBeanServer";
+  permission javax.management.MBeanPermission "-#-[-]", "queryNames";
+};

elasticsearch/start

@@ -19,6 +19,22 @@ discoverIpFromLink() {
   OPTS="$OPTS -E $mode.host=$ip"
 }
 
+discoverAllGlobalIps() {
+  if [ ${#IGNORE_NETWORK} -eq 0 ]
+  then
+    IGNORE_NETWORK='999.999.999.999'
+  fi
+  printf "Finding IPs"
+  while [ ${#ips} -eq 0 ]
+  do
+    printf "."
+    ips=`ipaddr show scope global| grep -v "inet ${IGNORE_NETWORK}" | awk '$1 == "inet" { if (!match($2,"/32")) { gsub("/.*","",$2) ; addrs[length(addrs)] = $2 } } END { for (i in addrs) { if (i>0) printf "," ; printf addrs[i] } }'`
+    sleep 1
+  done
+  echo " found! $ips"
+  OPTS="$OPTS -E network.host=$ips"
+}
+
 setup_clustering() {
 
   if [ -n "$CLUSTER" ]; then
@@ -72,15 +88,19 @@ setup_personality() {
   if [ -n "$TYPE" ]; then
     case $TYPE in
       MASTER)
-        OPTS="$OPTS -E node.master=true -E node.data=false"
+        OPTS="$OPTS -E node.master=true -E node.data=false -E node.ingest=false"
         ;;
 
-      GATEWAY)
-        OPTS="$OPTS -E node.master=false -E node.data=false"
+      GATEWAY|COORDINATING)
+        OPTS="$OPTS -E node.master=false -E node.data=false -E node.ingest=false"
+        ;;
+
+      INGEST)
+        OPTS="$OPTS -E node.master=false -E node.data=false -E node.ingest=true"
         ;;
 
       DATA|NON_MASTER)
-        OPTS="$OPTS -E node.master=false -E node.data=true"
+        OPTS="$OPTS -E node.master=false -E node.data=true -E node.ingest=false"
         ;;
 
       *)
@@ -112,8 +132,13 @@ OPTS="$OPTS \
   -E transport.tcp.port=9300 \
   -E http.port=9200"
 
-discoverIpFromLink $DISCOVER_TRANSPORT_IP transport
-discoverIpFromLink $DISCOVER_HTTP_IP http
+discoverAllGlobalIps
+if [ "${DISCOVER_TRANSPORT_IP}" != "" ]; then
+  discoverIpFromLink $DISCOVER_TRANSPORT_IP transport
+fi
+if [ "${DISCOVER_HTTP_IP}" != "" ]; then
+  discoverIpFromLink $DISCOVER_HTTP_IP http
+fi
 
 setup_personality
 setup_clustering

gitblit/Dockerfile

@@ -1,18 +1,18 @@
 FROM java:8
- 
-MAINTAINER itzg
+
+LABEL maintainer "itzg"
 
 ENV GITBLIT_VERSION 1.7.1
- 
+
 RUN wget -qO /tmp/gitblit.tgz http://dl.bintray.com/gitblit/releases/gitblit-$GITBLIT_VERSION.tar.gz
- 
+
 RUN tar -C /opt -xvf /tmp/gitblit.tgz && \
     rm /tmp/gitblit.tgz
- 
+
 VOLUME ["/data"]
- 
+
 ADD start.sh /start
- 
+
 ENV GITBLIT_PATH=/opt/gitblit-${GITBLIT_VERSION} \
     GITBLIT_HTTPS_PORT=443 \
     GITBLIT_HTTP_PORT=80 \
@@ -20,7 +20,7 @@ ENV GITBLIT_PATH=/opt/gitblit-${GITBLIT_VERSION} \
     GITBLIT_ADMIN_USER=admin \
     GITBLIT_INITIAL_REPO=
 WORKDIR $GITBLIT_PATH
- 
+
 EXPOSE 80 443
- 
+
 ENTRYPOINT ["/start"]

gvm/Dockerfile

@@ -1,6 +1,6 @@
 FROM itzg/ubuntu-openjdk-7
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 RUN apt-get install -y curl unzip
 

jekyll-github-pages/Dockerfile

@@ -1,6 +1,6 @@
 FROM ubuntu:trusty
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 ENV APT_GET_UPDATE 2014-09-18
 
@@ -21,4 +21,3 @@ EXPOSE 4000
 
 ADD start.sh /start
 CMD ["/start"]
-

jenkins/Dockerfile

@@ -1,6 +1,6 @@
 FROM java:openjdk-8u102-jdk
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 RUN apt-get update && \
   DEBIAN_FRONTEND=noninteractive apt-get install -y \

kibana/Dockerfile

@@ -1,8 +1,8 @@
 FROM openjdk:8u111-jre
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
-ENV KIBANA_VERSION 5.0.2
+ENV KIBANA_VERSION 5.1.2
 
 ADD https://artifacts.elastic.co/downloads/kibana/kibana-${KIBANA_VERSION}-linux-x86_64.tar.gz /tmp/kibana.tgz
 

kibana/docker-compose-test.yml

@@ -0,0 +1,12 @@
+version: '2'
+
+services:
+  es:
+    build: ../elasticsearch
+    ports:
+      - "9200:9200"
+
+  kibana:
+    build: .
+    ports:
+      - "5601:5601"

logstash/Dockerfile

@@ -1,6 +1,6 @@
 FROM itzg/ubuntu-openjdk-7
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 ENV LOGSTASH_VERSION 1.5.0-1
 

minecraft-server/Dockerfile

@@ -1,30 +1,36 @@
-FROM java:8
+FROM alpine
 
-MAINTAINER itzg
 
-ENV APT_GET_UPDATE 2016-04-23
-RUN apt-get update
+LABEL maintainer "itzg"
 
-RUN DEBIAN_FRONTEND=noninteractive apt-get install -y \
-  imagemagick \
-  lsof \
-  nano \
-  sudo \
-  vim \
-  jq \
-  && apt-get clean
+RUN echo "http://dl-3.alpinelinux.org/alpine/v3.5/community/" >> /etc/apk/repositories &&\
+        apk update && \
+        apk add \
+          openjdk8-jre-base \
+          openssl \
+          imagemagick \
+          lsof \
+          su-exec \
+          bash \
+          curl \
+          git \
+          jq \
+          mysql-client \
+          python python-dev && \
+        rm -rf /var/cache/apk/*
 
-RUN useradd -s /bin/false --uid 1000 minecraft \
+RUN addgroup -g 1000 minecraft \
+  && adduser -Ss /bin/false -u 1000 -G minecraft -h /home/minecraft minecraft \
   && mkdir /data \
   && mkdir /config \
   && mkdir /mods \
   && mkdir /plugins \
-  && mkdir /home/minecraft \
   && chown minecraft:minecraft /data /config /mods /plugins /home/minecraft
 
 EXPOSE 25565 25575
 
-ADD https://github.com/itzg/restify/releases/download/1.0.3/restify_linux_amd64 /usr/local/bin/restify
+ADD https://github.com/itzg/restify/releases/download/1.0.4/restify_linux_amd64 /usr/local/bin/restify
+ADD https://github.com/itzg/rcon-cli/releases/download/1.3/rcon-cli_linux_amd64 /usr/local/bin/rcon-cli
 COPY start.sh /start
 COPY start-minecraft.sh /start-minecraft
 COPY mcadmin.jq /usr/share
@@ -38,6 +44,7 @@ ENTRYPOINT [ "/start" ]
 
 ENV UID=1000 GID=1000 \
     MOTD="A Minecraft Server Powered by Docker" \
-    JVM_OPTS="-Xmx1024M -Xms1024M" \
+    JVM_XX_OPTS="-XX:+UseG1GC" MEMORY="1G" \
     TYPE=VANILLA VERSION=LATEST FORGEVERSION=RECOMMENDED LEVEL=world PVP=true DIFFICULTY=easy \
+    ENABLE_RCON=true RCON_PORT=25575 RCON_PASSWORD=minecraft \
     LEVEL_TYPE=DEFAULT GENERATOR_SETTINGS= WORLD= MODPACK= ONLINE_MODE=TRUE CONSOLE=true

minecraft-server/Minecraft server containment.xml

@@ -0,0 +1 @@
+<mxfile userAgent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.110 Safari/537.36" version="6.4.4" editor="www.draw.io" type="github"><diagram name="Page-1">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</diagram></mxfile>

minecraft-server/README.md

@@ -35,6 +35,24 @@ With that you can easily view the logs, stop, or re-start the container:
 
 ## Interacting with the server
 
+[RCON](http://wiki.vg/RCON) is enabled by default, so you can `exec` into the container to
+access the Minecraft server console:
+
+```
+docker exec -i mc rcon-cli
+```
+
+Note: The `-i` is required for interactive use of rcon-cli.
+
+To run a simple, one-shot command, such as stopping a Minecraft server, pass the command as
+arguments to `rcon-cli`, such as:
+
+```
+docker exec mc rcon-cli stop
+```
+
+_The `-i` is not needed in this case._
+
 In order to attach and interact with the Minecraft server, add `-it` when starting the container, such as
 
     docker run -d -it -p 25565:25565 --name mc itzg/minecraft-server
@@ -159,6 +177,10 @@ Enable Bukkit/Spigot server mode by adding a `-e TYPE=BUKKIT -e VERSION=1.8` or
         -e TYPE=SPIGOT -e VERSION=1.8 \
         -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server
 
+If you are hosting your own copy of Bukkit/Spigot you can override the download URLs with:
+* -e BUKKIT_DOWNLOAD_URL=<url>
+* -e SPIGOT_DOWNLOAD_URL=<url>
+
 You can build spigot from source by adding `-e BUILD_FROM_SOURCE=true`
 
 __NOTE: to avoid pegging the CPU when running Spigot,__ you will need to
@@ -224,6 +246,9 @@ pass `--noconsole` at the very end of the command line and not use `-it`. For ex
         -e TYPE=PAPER -e VERSION=1.9.4 \
         -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server --noconsole
 
+If you are hosting your own copy of PaperSpigot you can override the download URL with:
+* -e PAPER_DOWNLOAD_URL=<url>
+
 You can install Bukkit plugins in two ways...
 
 ### Using the /data volume
@@ -264,6 +289,72 @@ This works well if you want to have a common set of plugins in a separate
 location, but still have multiple worlds with different server requirements
 in either persistent volumes or a downloadable archive.
 
+## Running a Server with a Feed-The-Beast (FTB) modpack
+
+Enable this server mode by adding a `-e TYPE=FTB` to your command-line,
+but note the following additional steps needed...
+
+You need to specify a modpack to run, using the `FTB_SERVER_MOD` environment
+variable. An FTB server modpack is available together with its respective
+client modpack on https://www.feed-the-beast.com under "Additional Files."
+Because of the interactive delayed download mechanism on that web site, you
+must manually download the server modpack. Copy the modpack to the `/data`
+directory (see "Attaching data directory to host filesystem”).
+
+Now you can add a `-e FTB_SERVER_MOD=name_of_modpack.zip` to your command-line.
+
+    $ docker run -d -v /path/on/host:/data -e TYPE=FTB \
+        -e FTB_SERVER_MOD=FTBPresentsSkyfactory3Server_3.0.6.zip \
+        -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server
+
+Instead of explicitly downloading a modpack from the Feed the Beast site, you
+can you set `FTB_SERVER_MOD` to the **server** URL of a modpack, such as
+
+    $ docker run ... \
+      -e TYPE=FTB \
+      -e FTB_SERVER_MOD=https://www.feed-the-beast.com/projects/ftb-infinity-lite-1-10/files/2402889
+
+### Using the /data volume
+
+You must use a persistent `/data` mount for this type of server.
+
+To do this, you will need to attach the container's `/data` directory
+(see "Attaching data directory to host filesystem”).
+
+If the modpack is updated and you want to run the new version on your
+server, you stop and remove the container:
+
+    docker stop mc
+    docker rm mc
+
+Do not erase anything from your /data directory (unless you know of
+specific mods that have been removed from the modpack). Download the
+updated FTB server modpack and copy it to `/data`. Start a new container
+with `FTB_SERVER_MOD` specifying the updated modpack file.
+
+    $ docker run -d -v /path/on/host:/data -e TYPE=FTB \
+        -e FTB_SERVER_MOD=FTBPresentsSkyfactory3Server_3.0.7.zip \
+        -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server
+
+### FTB server JVM options
+
+An FTB server modpack contains its own startup script that launches the
+JVM and it does not use the `JVM_OPTS` environment variable. Instead
+you can use `MIN_RAM` and `MAX_RAM` variables. These are appended to
+the JVM `-Xms` and `-Xmx` options. For example, `-e MIN_RAM=2G` results
+in `-Xms2G` passed to the JVM.
+
+Additionally, `PERMGEN_SIZE` is passed on to `-XX:PermSize`. Here is an
+example:
+
+    $ docker run -d -v /path/on/host:/data -e TYPE=FTB \
+        -e MIN_RAM=1G -e MAX_RAM=2G -e PERMGEN_SIZE=512M \
+        -e FTB_SERVER_MOD=FTBPresentsSkyfactory3Server_3.0.6.zip \
+        -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server
+
+Note: The FTB server start script will also override other options,
+like `MOTD`.
+
 ## Using Docker Compose
 
 Rather than type the server options below, the port mappings above, etc
@@ -290,7 +381,7 @@ minecraft-server:
 
 and in the same directory as that file run
 
-    docker-compose -d up
+    docker-compose up -d
 
 Now, go play...or adjust the  `environment` section to configure
 this server instance.    
@@ -549,10 +640,16 @@ By default, server checks connecting players against Minecraft's account databas
 
 ### Memory Limit
 
-The Java memory limit can be adjusted using the `JVM_OPTS` environment variable, where the default is
-the setting shown in the example (max and min at 1024 MB):
+By default, the image declares a Java initial and maximum memory limit of 1 GB. There are several
+ways to adjust the memory settings:
 
-    docker run -e 'JVM_OPTS=-Xmx1024M -Xms1024M' ...
+* `MEMORY`, "1G" by default, can be used to adjust both initial (`Xms`) and max (`Xmx`)
+  memory settings of the JVM
+* `INIT_MEMORY`, independently sets the initial heap size
+* `MAX_MEMORY`, independently sets the max heap size
+
+The values of all three are passed directly to the JVM and support format/units as
+`<size>[g|G|m|M|k|K]`.
 
 ### /data ownership
 

minecraft-server/docker-compose-big.yml

@@ -0,0 +1,29 @@
+version: '3'
+
+services:
+  minecraft:
+    ports:
+      - "25565:25565"
+    volumes:
+      - "mcbig:/data"
+    environment:
+      EULA: "TRUE"
+      MAX_MEMORY: 32G
+      MAX_BUILD_HEIGHT: 256
+      VIEW_DISTANCE: 15
+      LEVEL_TYPE: LARGEBIOMES
+      MAX_PLAYERS: 100
+      CONSOLE: "false"
+    image: itzg/minecraft-server
+    restart: always
+  rcon:
+    image: itzg/rcon
+    ports:
+      - "4326:4326"
+      - "4327:4327"
+    volumes:
+      - "rcon:/opt/rcon-web-admin/db"
+
+volumes:
+  mcbig:
+  rcon:

minecraft-server/docker-compose.yml

@@ -1,14 +1,27 @@
-minecraft-server:
-  ports:
-    - "25565:25565"
+version: '3'
 
-  environment:
-    EULA: "TRUE"
+services:
+  minecraft:
+    image: itzg/minecraft-server
+    ports:
+      - "25565:25565"
+    volumes:
+      - "mc:/data"
+    environment:
+      EULA: "TRUE"
+      CONSOLE: "false"
+      ENABLE_RCON: "true"
+      RCON_PASSWORD: "testing"
+      RCON_PORT: 28016
+    restart: always
+  rcon:
+    image: itzg/rcon
+    ports:
+      - "4326:4326"
+      - "4327:4327"
+    volumes:
+      - "rcon:/opt/rcon-web-admin/db"
 
-  image: itzg/minecraft-server
-
-  container_name: minecraft-server
-
-  tty: true
-  stdin_open: true
-  restart: always
+volumes:
+  mc:
+  rcon:

minecraft-server/mcadmin.jq

@@ -1,7 +1,7 @@
 .[] |
  select(.elements | length > 1) |
   select(.elements[].elements[] | select(.class == "version" and .text == $version)) |
-   .elements[].elements[] | 
+   .elements[].elements[] |
     select(.class|contains("server-jar")) |
      .elements[] | select(.name="a") |
       .href

minecraft-server/start-minecraft.sh

@@ -18,21 +18,23 @@ if [ ! -e /data/eula.txt ]; then
   fi
 fi
 
+SERVER_PROPERTIES=/data/server.properties
+FTB_DIR=/data/FeedTheBeast
 VERSIONS_JSON=https://launchermeta.mojang.com/mc/game/version_manifest.json
 
 echo "Checking version information."
 case "X$VERSION" in
   X|XLATEST|Xlatest)
-    VANILLA_VERSION=`curl -sSL $VERSIONS_JSON | jq -r '.latest.release'`
+    VANILLA_VERSION=`curl -fsSL $VERSIONS_JSON | jq -r '.latest.release'`
   ;;
   XSNAPSHOT|Xsnapshot)
-    VANILLA_VERSION=`curl -sSL $VERSIONS_JSON | jq -r '.latest.snapshot'`
+    VANILLA_VERSION=`curl -fsSL $VERSIONS_JSON | jq -r '.latest.snapshot'`
   ;;
   X[1-9]*)
     VANILLA_VERSION=$VERSION
   ;;
   *)
-    VANILLA_VERSION=`curl -sSL $VERSIONS_JSON | jq -r '.latest.release'`
+    VANILLA_VERSION=`curl -fsSL $VERSIONS_JSON | jq -r '.latest.release'`
   ;;
 esac
 
@@ -56,28 +58,32 @@ function downloadSpigot {
   case "$TYPE" in
     *BUKKIT|*bukkit)
       match="Craftbukkit"
-
+      downloadUrl=${BUKKIT_DOWNLOAD_URL}
       ;;
     *)
       match="Spigot"
+      downloadUrl=${SPIGOT_DOWNLOAD_URL}
       ;;
   esac
 
-  downloadUrl=$(restify --class=jar-div https://mcadmin.net/ | \
-    jq --arg version "$match $VANILLA_VERSION" -r -f /usr/share/mcadmin.jq)
-  if [[ -n $downloadUrl ]]; then
-    echo "Downloading $match"
-    wget -q -O $SERVER "$downloadUrl"
-    status=$?
-    if [ $status != 0 ]; then
-      echo "ERROR: failed to download from $downloadUrl due to (error code was $status)"
-      exit 3
+  if [[ -z $downloadUrl ]]; then
+    downloadUrl=$(restify --class=jar-div https://mcadmin.net/ | \
+      jq --arg version "$match $VANILLA_VERSION" -r -f /usr/share/mcadmin.jq)
+    if [[ -z $downloadUrl ]]; then
+      echo "ERROR: Version $VANILLA_VERSION is not supported for $TYPE"
+      echo "       Refer to https://mcadmin.net/ for supported versions"
+      exit 2
     fi
-  else
-    echo "ERROR: Version $VANILLA_VERSION is not supported for $TYPE"
-    echo "       Refer to https://mcadmin.net/ for supported versions"
-    exit 2
   fi
+
+  echo "Downloading $match"
+  curl -kfsSL -o $SERVER "$downloadUrl"
+  status=$?
+  if [ ! -f $SERVER ]; then
+    echo "ERROR: failed to download from $downloadUrl (status=$status)"
+    exit 3
+  fi
+
 }
 
 function downloadPaper {
@@ -98,11 +104,11 @@ function downloadPaper {
   esac
 
   if [ $build != "nosupp" ]; then
-    downloadUrl="https://ci.destroystokyo.com/job/PaperSpigot/$build/artifact/paperclip.jar"
-    wget -q -O $SERVER "$downloadUrl"
-    status=$?
-    if [ $status != 0 ]; then
-      echo "ERROR: failed to download from $downloadUrl due to (error code was $status)"
+    rm $SERVER
+    downloadUrl=${PAPER_DOWNLOAD_URL:-https://ci.destroystokyo.com/job/PaperSpigot/$build/artifact/paperclip.jar}
+    curl -fsSL -o $SERVER "$downloadUrl"
+    if [ ! -f $SERVER ]; then
+      echo "ERROR: failed to download from $downloadUrl (status=$?)"
       exit 3
     fi
   else
@@ -117,15 +123,22 @@ function installForge {
   TYPE=FORGE
   norm=$VANILLA_VERSION
 
+  case $VANILLA_VERSION in
+    *.*.*)
+      norm=$VANILLA_VERSION ;;
+    *.*)
+      norm=${VANILLA_VERSION}.0 ;;
+  esac
+
   echo "Checking Forge version information."
   case $FORGEVERSION in
     RECOMMENDED)
-      curl -o /tmp/forge.json -sSL http://files.minecraftforge.net/maven/net/minecraftforge/forge/promotions_slim.json
-      FORGE_VERSION=$(cat /tmp/forge.json | jq -r ".promos[\"$norm-recommended\"]")
+      curl -fsSL -o /tmp/forge.json http://files.minecraftforge.net/maven/net/minecraftforge/forge/promotions_slim.json
+      FORGE_VERSION=$(cat /tmp/forge.json | jq -r ".promos[\"$VANILLA_VERSION-recommended\"]")
       if [ $FORGE_VERSION = null ]; then
-        FORGE_VERSION=$(cat /tmp/forge.json | jq -r ".promos[\"$norm-latest\"]")
+        FORGE_VERSION=$(cat /tmp/forge.json | jq -r ".promos[\"$VANILLA_VERSION-latest\"]")
         if [ $FORGE_VERSION = null ]; then
-          echo "ERROR: Version $FORGE_VERSION is not supported by Forge"
+          echo "ERROR: Version $VANILLA_VERSION is not supported by Forge"
           echo "       Refer to http://files.minecraftforge.net/ for supported versions"
           exit 2
         fi
@@ -137,24 +150,120 @@ function installForge {
       ;;
   esac
 
-  # URL format changed for 1.7.10 from 10.13.2.1300
-  sorted=$((echo $FORGE_VERSION; echo 10.13.2.1300) | sort -V | head -1)
-  if [[ $norm == '1.7.10' && $sorted == '10.13.2.1300' ]]; then
-      # if $FORGEVERSION >= 10.13.2.1300
-      normForgeVersion="$norm-$FORGE_VERSION-$norm"
+  normForgeVersion=$VANILLA_VERSION-$FORGE_VERSION-$norm
+  shortForgeVersion=$VANILLA_VERSION-$FORGE_VERSION
+
+  forgeFileNames="
+  $normForgeVersion/forge-$normForgeVersion-installer.jar
+  $shortForgeVersion/forge-$shortForgeVersion-installer.jar
+  END
+"
+
+  FORGE_INSTALLER="/tmp/forge-$shortForgeVersion-installer.jar"
+  installMarker=".forge-installed-$shortForgeVersion"
+
+  if [ ! -e $installMarker ]; then
+    if [ ! -e $FORGE_INSTALLER ]; then
+      echo "Downloading $normForgeVersion"
+      for fn in $forgeFileNames; do
+        if [ $fn == END ]; then
+          echo "Unable to compute URL for $normForgeVersion"
+          exit 2
+        fi
+        downloadUrl=http://files.minecraftforge.net/maven/net/minecraftforge/forge/$fn
+        echo "...trying $downloadUrl"
+        if curl -o $FORGE_INSTALLER -fsSL $downloadUrl; then
+          break
+        fi
+      done
+
+      echo "Installing Forge $shortForgeVersion"
+      mkdir -p mods
+      tries=3
+      while ((--tries >= 0)); do
+        java -jar $FORGE_INSTALLER --installServer
+        if [ $? == 0 ]; then
+          break
+        fi
+      done
+      if (($tries < 0)); then
+        echo "Forge failed to install after several tries." >&2
+        exit 10
+      fi
+      SERVER=$(ls *forge*$shortForgeVersion*.jar)
+      if [ -z $SERVER ]; then
+        echo "Unable to derive server jar for Forge $shortForgeVersion"
+        exit 2
+      fi
+
+      echo "Using server $SERVER"
+      echo $SERVER > $installMarker
+    fi
   else
-      normForgeVersion="$norm-$FORGE_VERSION"
+    SERVER=$(cat $installMarker)
+  fi
+}
+
+function isURL {
+  local value=$1
+
+  if [[ ${value:0:8} == "https://" || ${value:0:7} = "http://" ]]; then
+    return 0
+  else
+    return 1
+  fi
+}
+
+function installFTB {
+  TYPE=FEED-THE-BEAST
+
+  echo "Looking for Feed-The-Beast server modpack."
+  if [[ -z $FTB_SERVER_MOD ]]; then
+      echo "Environment variable FTB_SERVER_MOD not set."
+      echo "Set FTB_SERVER_MOD to the file name of the FTB server modpack."
+      echo "(And place the modpack in the /data directory.)"
+      exit 2
+  fi
+  local srv_modpack=${FTB_SERVER_MOD}
+  if isURL ${srv_modpack}; then
+      case $srv_modpack in
+        */download)
+          break;;
+        *)
+          srv_modpack=${srv_modpack}/download;;
+      esac
+      local file=$(basename $(dirname $srv_modpack))
+      local downloaded=/data/${file}.zip
+      echo "Downloading FTB modpack...
+  $srv_modpack -> $downloaded"
+      curl -sSL -o $downloaded $srv_modpack
+      srv_modpack=$downloaded
+  fi
+  if [[ ${srv_modpack:0:5} == "data/" ]]; then
+      # Prepend with "/"
+      srv_modpack=/${srv_modpack}
+  fi
+  if [[ ! ${srv_modpack:0:1} == "/" ]]; then
+      # If not an absolute path, assume file is in "/data"
+      srv_modpack=/data/${srv_modpack}
+  fi
+  if [[ ! -f ${srv_modpack} ]]; then
+      echo "FTB server modpack ${srv_modpack} not found."
+      exit 2
+  fi
+  if [[ ! ${srv_modpack: -4} == ".zip" ]]; then
+      echo "FTB server modpack ${srv_modpack} is not a zip archive."
+      echo "Please set FTB_SERVER_MOD to a file with a .zip extension."
+      exit 2
   fi
 
-  FORGE_INSTALLER="forge-$normForgeVersion-installer.jar"
-  SERVER="forge-$normForgeVersion-universal.jar"
-
-  if [ ! -e "$SERVER" ]; then
-    echo "Downloading $FORGE_INSTALLER ..."
-    wget -q http://files.minecraftforge.net/maven/net/minecraftforge/forge/$normForgeVersion/$FORGE_INSTALLER
-    echo "Installing $SERVER"
-    java -jar $FORGE_INSTALLER --installServer
-  fi
+  echo "Unpacking FTB server modpack ${srv_modpack} ..."
+  mkdir -p ${FTB_DIR}
+  unzip -o ${srv_modpack} -d ${FTB_DIR}
+  cp -f /data/eula.txt ${FTB_DIR}/eula.txt
+  FTB_SERVER_START=${FTB_DIR}/ServerStart.sh
+  chmod a+x ${FTB_SERVER_START}
+  sed -i "s/-jar/-Dfml.queryResult=confirm -jar/" ${FTB_SERVER_START}
 }
 
 function installVanilla {
@@ -203,6 +312,11 @@ case "$TYPE" in
     installForge
   ;;
 
+  FTB|ftb)
+    TYPE=FEED-THE-BEAST
+    installFTB
+  ;;
+
   VANILLA|vanilla)
     installVanilla
   ;;
@@ -254,8 +368,8 @@ if [[ "$MODPACK" ]]; then
 case "X$MODPACK" in
   X[Hh][Tt][Tt][Pp]*[Zz][iI][pP])
     echo "Downloading mod/plugin pack via HTTP"
-    echo "$MODPACK"
-    wget -q -O /tmp/modpack.zip "$MODPACK"
+    echo "  from $MODPACK ..."
+    curl -sSL -o /tmp/modpack.zip "$MODPACK"
     if [ "$TYPE" = "SPIGOT" ]; then
       mkdir -p /data/plugins
       unzip -o -d /data/plugins /tmp/modpack.zip
@@ -320,7 +434,7 @@ if [ ! -e server.properties ]; then
 
   if [ -n "$LEVEL_TYPE" ]; then
     # normalize to uppercase
-    LEVEL_TYPE=${LEVEL_TYPE^^}
+    LEVEL_TYPE=$( echo ${LEVEL_TYPE} | tr '[:lower:]' '[:upper:]' )
     echo "Setting level type to $LEVEL_TYPE"
     # check for valid values and only then set
     case $LEVEL_TYPE in
@@ -359,7 +473,8 @@ if [ ! -e server.properties ]; then
 
   if [ -n "$MODE" ]; then
     echo "Setting mode"
-    case ${MODE,,?} in
+    MODE_LC=$( echo $MODE | tr '[:upper:]' '[:lower:]' )
+    case $MODE_LC in
       0|1|2|3)
         ;;
       su*)
@@ -380,7 +495,7 @@ if [ ! -e server.properties ]; then
         ;;
     esac
 
-    sed -i "/gamemode\s*=/ c gamemode=$MODE" /data/server.properties
+    sed -i "/gamemode\s*=/ c gamemode=$MODE" $SERVER_PROPERTIES
   fi
 fi
 
@@ -417,12 +532,12 @@ if [ ! -e banned-ips.json ]; then
 fi
 
 # If any modules have been provided, copy them over
-[ -d /data/mods ] || mkdir /data/mods
-for m in /mods/*.jar
+mkdir -p /data/mods
+for m in /mods/*.{jar,zip}
 do
-  if [ -f "$m" ]; then
+  if [ -f "$m" -a ! -f "/data/mods/$m" ]; then
     echo Copying mod `basename "$m"`
-    cp -f "$m" /data/mods
+    cp "$m" /data/mods
   fi
 done
 [ -d /data/config ] || mkdir /data/config
@@ -441,16 +556,33 @@ if [ "$TYPE" = "SPIGOT" ]; then
   fi
 fi
 
-if [[ $CONSOLE = false ]]; then
-  EXTRA_ARGS=--noconsole
-else
-  EXTRA_ARGS=""
+EXTRA_ARGS=""
+# Optional disable console
+if [[ ${CONSOLE} = false || ${CONSOLE} = FALSE ]]; then
+  EXTRA_ARGS+="--noconsole"
 fi
 
-# If we have a bootstrap.txt file... feed that in to the server stdin
-if [ -f /data/bootstrap.txt ];
-then
-    exec java $JVM_OPTS -jar $SERVER "$@" $EXTRA_ARGS < /data/bootstrap.txt
-else
-    exec java $JVM_OPTS -jar $SERVER "$@" $EXTRA_ARGS
+# Optional disable GUI for headless servers
+if [[ ${GUI} = false || ${GUI} = FALSE ]]; then
+  EXTRA_ARGS="${EXTRA_ARGS} nogui"
+fi
+
+# put these prior JVM_OPTS at the end to give any memory settings there higher precedence
+echo "Setting initial memory to ${INIT_MEMORY:-${MEMORY}} and max to ${MAX_MEMORY:-${MEMORY}}"
+JVM_OPTS="-Xms${INIT_MEMORY:-${MEMORY}} -Xmx${MAX_MEMORY:-${MEMORY}} ${JVM_OPTS}"
+
+if [[ ${TYPE} == "FEED-THE-BEAST" ]]; then
+    cp -f $SERVER_PROPERTIES ${FTB_DIR}/server.properties
+    cp -f /data/{eula,ops,white-list}.txt ${FTB_DIR}/
+    cd ${FTB_DIR}
+    echo "Running FTB server modpack start ..."
+    exec sh ${FTB_SERVER_START}
+else
+    # If we have a bootstrap.txt file... feed that in to the server stdin
+    if [ -f /data/bootstrap.txt ];
+    then
+        exec java $JVM_XX_OPTS $JVM_OPTS -jar $SERVER "$@" $EXTRA_ARGS < /data/bootstrap.txt
+    else
+        exec java $JVM_XX_OPTS $JVM_OPTS -jar $SERVER "$@" $EXTRA_ARGS
+    fi
 fi

minecraft-server/start.sh

@@ -1,13 +1,13 @@
 #!/bin/sh
 
 set -e
-usermod --uid $UID minecraft
-groupmod --gid $GID minecraft
+sed -i "/^minecraft/s/:1000:1000:/:${UID}:${GID}:/g" /etc/passwd
+sed -i "/^minecraft/s/:1000:/:${GID}:/g" /etc/group
 
 if [ "$SKIP_OWNERSHIP_FIX" != "TRUE" ]; then
   fix_ownership() {
     dir=$1
-    if ! sudo -u minecraft test -w $dir; then
+    if ! su-exec minecraft test -w $dir; then
       echo "Correcting writability of $dir ..."
       chown -R minecraft:minecraft $dir
       chmod -R u+w $dir
@@ -19,4 +19,4 @@ if [ "$SKIP_OWNERSHIP_FIX" != "TRUE" ]; then
 fi
 
 echo "Switching to user 'minecraft'"
-exec sudo -E -u minecraft /start-minecraft "$@"
+su-exec minecraft /start-minecraft $@

spring-boot/Dockerfile

@@ -1,6 +1,6 @@
 FROM itzg/gvm
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 RUN ["/run", "install", "springboot"]
 

titan-gremlin/Dockerfile

@@ -1,11 +1,12 @@
-FROM itzg/ubuntu-openjdk-7
+FROM openjdk:8-jre
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 ENV TITAN_VERSION 0.5.4
 
-RUN wget -q -O /tmp/titan.zip http://s3.thinkaurelius.com/downloads/titan/titan-$TITAN_VERSION-hadoop2.zip
-RUN unzip -q /tmp/titan.zip -d /opt && rm /tmp/titan.zip
+ADD http://s3.thinkaurelius.com/downloads/titan/titan-$TITAN_VERSION-hadoop2.zip /tmp/titan.zip
+RUN unzip -q /tmp/titan.zip -d /opt && \
+    rm /tmp/titan.zip
 
 ENV TITAN_HOME /opt/titan-$TITAN_VERSION-hadoop2
 WORKDIR $TITAN_HOME

titandb/Dockerfile

@@ -1,6 +1,6 @@
 FROM itzg/ubuntu-openjdk-7
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 ENV APT_GET_UPDATE 2014-07-19
 

ubuntu-openjdk-7/Dockerfile

@@ -1,6 +1,6 @@
 FROM ubuntu:trusty
 
-MAINTAINER itzg
+LABEL maintainer "itzg"
 
 ENV APT_GET_UPDATE 2015-10-29
 RUN apt-get update