Auto-merging via docker-versions-create

# Conflicts:
#	Dockerfile

.circleci/config.yml

@@ -1,14 +1,16 @@
-version: 2
+version: 2.1
+
 jobs:
   minecraft_server:
     docker:
-      - image: circleci/buildpack-deps:19.10
+      - image: docker:18.09.6
+    environment:
+      DOCKER_BUILDKIT: "1"
     steps:
       - checkout
-      - setup_remote_docker
-      - run:
-          name: Build image
-          command: docker build -t mc:$CIRCLE_BUILD_NUM .
+      - setup_remote_docker:
+          version: 18.09.3
+      - run: docker build --platform linux/amd64,linux/arm64,linux/arm/v7 -t itzg/minecraft-server:multiarch .
 
 workflows:
   version: 2

Dockerfile

@@ -1,36 +1,34 @@
-FROM openjdk:8u212-jre-alpine
+FROM ubuntu:18.04
 
 LABEL maintainer "itzg"
 
-RUN apk add --no-cache -U \
-  openssl \
-  imagemagick \
-  lsof \
-  su-exec \
-  shadow \
-  bash \
-  curl iputils wget \
-  git \
-  jq \
-  mysql-client \
-  tzdata \
-  rsync \
-  nano
+RUN apt-get update \
+  && DEBIAN_FRONTEND=noninteractive \
+  apt-get install -y \
+    openjdk-8-jre-headless \
+    imagemagick \
+    gosu \
+    curl wget \
+    jq \
+    dos2unix \
+    mysql-client \
+    tzdata \
+    rsync \
+    nano \
+    && apt-get clean
 
 HEALTHCHECK --start-period=1m CMD mc-monitor status --host localhost --port $SERVER_PORT
 
-RUN addgroup -g 1000 minecraft \
-  && adduser -Ss /bin/false -u 1000 -G minecraft -h /home/minecraft minecraft \
-  && mkdir -m 777 /data \
-  && chown minecraft:minecraft /data /home/minecraft
+RUN addgroup --gid 1000 minecraft \
+  && adduser --system --shell /bin/false --uid 1000 --ingroup minecraft --home /data minecraft
 
 EXPOSE 25565 25575
 
 # hook into docker BuildKit --platform support
 # see https://docs.docker.com/engine/reference/builder/#automatic-platform-args-in-the-global-scope
 ARG TARGETOS=linux
-ARG TARGETARCH=amd64
-ARG TARGETVARIANT=""
+ARG TARGETARCH=arm
+ARG TARGETVARIANT=v7
 
 ARG EASY_ADD_VER=0.7.1
 ADD https://github.com/itzg/easy-add/releases/download/${EASY_ADD_VER}/easy-add_${TARGETOS}_${TARGETARCH}${TARGETVARIANT} /usr/bin/easy-add
@@ -66,7 +64,7 @@ WORKDIR /data
 ENTRYPOINT [ "/start" ]
 
 ENV UID=1000 GID=1000 \
-  JVM_XX_OPTS="-XX:+UseG1GC" MEMORY="1G" \
+  MEMORY="1G" \
   TYPE=VANILLA VERSION=LATEST FORGEVERSION=RECOMMENDED SPONGEBRANCH=STABLE SPONGEVERSION= FABRICVERSION=LATEST LEVEL=world \
   PVP=true DIFFICULTY=easy ENABLE_RCON=true RCON_PORT=25575 RCON_PASSWORD=minecraft \
   LEVEL_TYPE=DEFAULT SERVER_PORT=25565 ONLINE_MODE=TRUE SERVER_NAME="Dedicated Server" \

start

@@ -40,7 +40,7 @@ if [ $(id -u) = 0 ]; then
     echo 'hosts: files dns' > /etc/nsswitch.conf
   fi
 
-  exec su-exec ${runAsUser}:${runAsGroup} /start-configuration $@
+  exec gosu ${runAsUser}:${runAsGroup} /start-configuration $@
 else
   exec /start-configuration $@
 fi

start-configuration

@@ -7,6 +7,8 @@ shopt -s nullglob
 #umask 002
 export HOME=/data
 
+log "Running as uid=$(id -u) gid=$(id -g) with /data as '$(ls -lnd /data)'"
+
 if [ ! -e /data/eula.txt ]; then
   EULA="${EULA,,}"
   if [ "$EULA" != "true" ]; then
@@ -28,15 +30,6 @@ if [ ! -e /data/eula.txt ]; then
 fi
 
 
-log "Running as uid=$(id -u) gid=$(id -g) with /data as '$(ls -lnd /data)'"
-
-if ! touch /data/.verify_access; then
-  log "ERROR: /data doesn't seem to be writable. Please make sure attached directory is writable by uid=$(id -u)"
-  exit 2
-fi
-
-rm /data/.verify_access || true
-
 if [[ $PROXY ]]; then
     export http_proxy="$PROXY"
     export https_proxy="$PROXY"