Added support for Java 7

.github/workflows/build-multiarch.yml

@@ -5,6 +5,7 @@ on:
       - master
       - "*-multiarch"
       - "multiarch*"
+      - java7
       - java8-openj9
       - java11*
       - java16*
@@ -63,10 +64,10 @@ jobs:
 
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v2.7.0
+        uses: docker/build-push-action@v2.6.1
         with:
           context: .
-          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          platforms: linux/amd64,linux/arm/v7
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           # ensure latest base image is used

.github/workflows/main.yml

@@ -70,7 +70,7 @@ jobs:
 
     - name: Build and push
       id: docker_build
-      uses: docker/build-push-action@v2.7.0
+      uses: docker/build-push-action@v2.6.1
       with:
         context: .
         file: ./Dockerfile

Dockerfile

@@ -1,4 +1,4 @@
-FROM adoptopenjdk:8-jre-hotspot
+FROM openjdk:7-jre
 
 LABEL org.opencontainers.image.authors="Geoff Bourne <itzgeoff@gmail.com>"
 
@@ -6,7 +6,6 @@ RUN apt-get update \
   && DEBIAN_FRONTEND=noninteractive \
   apt-get install -y \
     imagemagick \
-    gosu \
     sudo \
     net-tools \
     curl wget \
@@ -22,6 +21,42 @@ RUN apt-get update \
     ttf-dejavu \
     && apt-get clean
 
+# Procedure from https://github.com/tianon/gosu/blob/master/INSTALL.md#from-debian
+ENV GOSU_VERSION 1.14
+RUN set -eux; \
+# save list of currently installed packages for later so we can clean up
+	savedAptMark="$(apt-mark showmanual)"; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends ca-certificates wget; \
+	if ! command -v gpg; then \
+		apt-get install -y --no-install-recommends gnupg2 dirmngr; \
+	elif gpg --version | grep -q '^gpg (GnuPG) 1\.'; then \
+# "This package provides support for HKPS keyservers." (GnuPG 1.x only)
+		apt-get install -y --no-install-recommends gnupg-curl; \
+	fi; \
+	rm -rf /var/lib/apt/lists/*; \
+	\
+	dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
+	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
+	wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
+	\
+# verify the signature
+	export GNUPGHOME="$(mktemp -d)"; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
+	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
+	command -v gpgconf && gpgconf --kill all || :; \
+	rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc; \
+	\
+# clean up fetch dependencies
+	apt-mark auto '.*' > /dev/null; \
+	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+	\
+	chmod +x /usr/local/bin/gosu; \
+# verify that the binary works
+	gosu --version; \
+	gosu nobody true
+
 RUN addgroup --gid 1000 minecraft \
   && adduser --system --shell /bin/false --uid 1000 --ingroup minecraft --home /data minecraft
 
@@ -52,7 +87,7 @@ RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
  --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
 RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
- --var version=1.7.0 --var app=mc-server-runner --file {{.app}} \
+ --var version=1.6.0 --var app=mc-server-runner --file {{.app}} \
  --from https://github.com/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
 RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \

README.md

@@ -38,7 +38,6 @@ By default, the container will download the latest version of the "vanilla" [Min
       * [Examples](#examples)
       * [Amazon Web Services (AWS) Deployment](#amazon-web-services-aws-deployment)
       * [Using Docker Compose](#using-docker-compose)
-   * [Troubleshooting](#troubleshooting)
    * [Server types](#server-types)
       * [Running a Forge Server](#running-a-forge-server)
       * [Running a Bukkit/Spigot server](#running-a-bukkitspigot-server)
@@ -129,7 +128,7 @@ By default, the container will download the latest version of the "vanilla" [Min
       * [Enabling Autopause](#enabling-autopause)
    * [Running on RaspberryPi](#running-on-raspberrypi)
 
-<!-- Added by: runner, at: Sun Aug 29 21:26:46 UTC 2021 -->
+<!-- Added by: runner, at: Sun Aug 15 17:44:45 UTC 2021 -->
 
 <!--te-->
 
@@ -351,14 +350,6 @@ and in the same directory as that file run
 Now, go play...or adjust the `environment` section to configure
 this server instance.
 
-## Troubleshooting
-
-To troubleshoot the container initialization, such as when server files are pre-downloaded, set the environment variable `DEBUG` to `true`. The container logs will include **much more** output, and it is highly recommended including that output when reporting any [issues](https://github.com/itzg/docker-minecraft-server/issues).
-
-To troubleshoot just the command-line used to start the Minecraft server, set the environment variable `DEBUG_EXEC` to `true`.
-
-To troubleshoot any issues with memory allocation reported by the JVM, set the environment variable `DEBUG_MEMORY` to `true`.
-
 ## Server types
 
 ### Running a Forge Server
@@ -1009,10 +1000,6 @@ For example (just the `-e` bits):
 
     -e LEVEL_TYPE=flat -e 'GENERATOR_SETTINGS=3;minecraft:bedrock,3*minecraft:stone,52*minecraft:sandstone;2;'
 
-In Minecraft 1.13+ you need to pass json ([generator site](https://misode.github.io/world/)) like this (details see [here](https://github.com/itzg/docker-minecraft-server/issues/999#issuecomment-907849644)):
-
-    -e LEVEL_TYPE=flat -e 'GENERATOR_SETTINGS={"biome":"minecraft:the_void","layers":[{"block":"minecraft:bedrock","height":1},{"block":"minecraft:stone","height":10},{"block":"minecraft:dirt","height":1}],"structures":{"structures":{}}}'
-
 ### Custom Server Resource Pack
 
 You can set a link to a custom resource pack and set it's checksum using the `RESOURCE_PACK` and `RESOURCE_PACK_SHA1` options respectively, the default is blank:

start-configuration

@@ -98,6 +98,14 @@ case "${TYPE^^}" in
   ;;
 
   FORGE)
+    if versionLessThan 1.17; then
+    log "**********************************************************************"
+    log "WARNING: The image tag itzg/minecraft-server:java8 is recommended"
+    log "         since some mods require Java 8"
+    log "         Exception traces reporting ClassCastException: class jdk.internal.loader.ClassLoaders\$AppClassLoader"
+    log "         can be fixed with java8"
+    log "**********************************************************************"
+    fi
     exec ${SCRIPTS:-/}start-deployForge "$@"
   ;;
 
@@ -110,6 +118,12 @@ case "${TYPE^^}" in
   ;;
 
   FTB|CURSEFORGE)
+    log "**********************************************************************"
+    log "WARNING: The image tag itzg/minecraft-server:java8 is recommended"
+    log "         since some mods require Java 8"
+    log "         Exception traces reporting ClassCastException: class jdk.internal.loader.ClassLoaders\$AppClassLoader"
+    log "         can be fixed with java8"
+    log "**********************************************************************"
     exec ${SCRIPTS:-/}start-deployCF "$@"
   ;;
 

start-deployLimbo

@@ -9,10 +9,6 @@ isDebugging && set -x
 : ${FORCE_REDOWNLOAD:=false}
 : ${LIMBO_SCHEMA_FILENAME:=default.schem}
 : ${LEVEL:=Default;${LIMBO_SCHEMA_FILENAME}}
-# defaults to localhost, if this is not set
-: ${SERVER_IP:=0.0.0.0}
-
-export LEVEL SERVER_IP
 
 if [[ ${LIMBO_BUILD^^} == LATEST ]]; then
   LIMBO_BUILD=lastStableBuild
@@ -26,14 +22,11 @@ if [ $? != 0 ]; then
   exit 1
 fi
 
-if [[ ${LIMBO_BUILD} = lastStableBuild ]]; then
+PURPUR_BUILD=$(jq -r '.number' <<<${buildJson})
-  LIMBO_BUILD=$(jq -r '.number' <<<${buildJson})
-  log "Resolved latest Limbo build to ${LIMBO_BUILD}"
-fi
 artifactPath=$(jq -r '.artifacts[] | select(.fileName|test("^Limbo-")) | .relativePath' <<<${buildJson})
 defaultSchemaPath=$(jq -r '.artifacts[] | select(.fileName|test(".*\\.schem")) | .relativePath' <<<${buildJson})
 
-export SERVER="limbo-${LIMBO_BUILD}.jar"
+export SERVER="purpur-${PURPUR_BUILD}.jar"
 
 if [ ! -f "$SERVER" ] || isTrue "$FORCE_REDOWNLOAD"; then
     downloadUrl="${baseUrl}/artifact/${artifactPath}"
@@ -53,7 +46,7 @@ if [ ! -f "${LIMBO_SCHEMA_FILENAME}" ]; then
   fi
 fi
 
-if [[ ${LEVEL} != *\;* ]]; then
+if [[ ${LEVEL} != "*;*" ]]; then
   LEVEL="${LEVEL};${LIMBO_SCHEMA_FILENAME}"
 fi
 export LEVEL

start-finalSetupModpack

@@ -154,10 +154,7 @@ fi
 if [[ "${GENERIC_PACK}" ]]; then
   if isURL "${GENERIC_PACK}"; then
     log "Downloading generic pack ..."
-    if ! curl -fsSL -o /tmp/generic_pack.zip "${GENERIC_PACK}"; then
+    curl -fsSL -o /tmp/generic_pack.zip "${GENERIC_PACK}"
-      log "ERROR: failed to download ${GENERIC_PACK}"
-      exit 2
-    fi
     GENERIC_PACK=/tmp/generic_pack.zip
   fi