Initial commit

.travis.yml

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+services:
+  - docker
+
+install:
+  - docker build -t minecraft .
+  - docker run -d -p 25565:25565 --name minecraft minecraft
+
+script:
+  - sleep 10
+  - docker ps | grep -q minecraft

Dockerfile

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+FROM openjdk:alpine
+
+LABEL maintainer "Terence Westphal"
+
+# Use default value if the build argument is not set
+ARG VERSION=1.11.2
+
+ENV MC_VERSION=${VERSION}
+ENV PACKAGE="/opt/minecraft"
+ENV JAR="minecraft_server.${MC_VERSION}.jar"
+ENV JAR_OPT="nogui"
+ENV WORKDIR="/srv/minecraft"
+ENV PATH="${PACKAGE}/scripts:$PATH"
+
+# Update the system
+RUN apk upgrade --no-cache --purge -v
+
+# Download Minecraft Server
+ADD https://s3.amazonaws.com/Minecraft.Download/versions/${MC_VERSION}/${JAR} ${PACKAGE}/${JAR}
+
+# Add package content
+ADD ./defaults/* ${PACKAGE}/defaults/
+ADD ./scripts/* ${PACKAGE}/scripts/
+
+# Serve the content from the WORKDIR
+WORKDIR ${WORKDIR}
+
+# Expose the container's WORKDIR
+VOLUME ${WORKDIR}
+
+# Expose the container's network port
+EXPOSE 25565
+
+# Start the Minecraft server
+ENTRYPOINT ["start.sh"]

LICENSE.md

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+MIT License
+
+Copyright (c) 2017 Terence Westphal
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+[![Build Status](https://travis-ci.org/terencewestphal/docker-minecraft.svg?branch=master)](https://travis-ci.org/terencewestphal/docker-minecraft) [![Docker Build Statu](https://img.shields.io/docker/build/terencewestphal/minecraft.svg)](https://hub.docker.com/r/terencewestphal/minecraft/builds/) [![Docker Stars](https://img.shields.io/docker/stars/terencewestphal/minecraft.svg)]() [![Docker Pulls](https://img.shields.io/docker/pulls/terencewestphal/minecraft.svg)](https://hub.docker.com/r/terencewestphal/minecraft/) 
+
+[![Minecraft](https://github.com/terencewestphal/docker-minecraft/blob/master/logo.png?raw=true)](https://minecraft.net/) 
+
+# Minecraft Server (Vanilla)
+
+**The vanilla Minecraft server in a Docker container**
+
+- Minimalistic and simple to configure.
+- Works out-of-the-box. Defaults are provided if no volume is mounted.
+- Based on the [Official OpenJDK Alpine](https://hub.docker.com/_/openjdk/) image.
+
+## Supported tags and Dockerfile
+
+- `1.11.2`, `latest` ([Dockerfile](https://raw.githubusercontent.com/terencewestphal/docker-minecraft/1.11.2/Dockerfile))
+
+
+### Pull  
+
+Get the latest version:
+```
+docker pull terencewestphal/minecraft:latest
+```
+
+Get a specific version:
+```
+docker pull terencewestphal/minecraft:1.11.2
+```
+
+### Build  
+
+Build the latest Minecraft version and tag the image:   
+```
+docker build -t minecraft .
+```
+
+Optional: Build with a specific Minecraft version:   
+```
+docker build --build-arg VERSION=1.11.2 -t minecraft .
+```
+
+### Run
+
+Run with default settings:
+```
+docker run -d -p 25565:25565 --name minecraft terencewestphal/minecraft
+```
+
+Run with volume mounted: 
+```
+docker run -d -p 25565:25565 -v $PWD/defaults:/srv/minecraft --name minecraft terencewestphal/minecraft
+```
+
+### Interactive Mode 
+
+Attach an interactive console in order to use the Minecraft server commands:
+```
+docker attach minecraft
+```

defaults/banned-ips.json

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+[]

defaults/banned-players.json

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+[]

defaults/ops.json

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+[]

defaults/usercache.json

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+[]

defaults/whitelist.json

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+[]

scripts/start.sh

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+#!/usr/bin/env sh
+
+set -eu
+
+accept_eula() {
+  fileExists "${WORKDIR}/eula.txt" || echo "eula=true" > "${WORKDIR}/eula.txt"
+}
+
+available_memory() {
+  free -m | grep Mem | awk '{ print $4 }'
+}
+
+copy() {
+  local src=$1
+  local dest=$2
+  cp -Rf "${src}" "${dest}" >/dev/null 2>&1 || error "Failed to copy ${src}"
+}
+
+check_defaults() {
+  local item
+  for item in ${PACKAGE}/defaults/*.json; do
+    local file="${item##*/}"
+    fileExists "${WORKDIR}/${file}" || copy "${PACKAGE}/defaults/${file}" "${WORKDIR}/${file}"
+  done;
+}
+
+error() {
+  sleep 0.1
+  local message=$@
+  echo "[ERROR] ${message}" 1>&2 && exit 1
+}
+
+fileExists() {
+  local file=$1
+  [[ -f "${file}" ]] || return 1
+}
+
+start_server() {
+  local ram=$(available_memory)
+  local jvm_opt="-Xms256M -Xmx${ram}M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalPacing -XX:+AggressiveOpts"
+  local jar_opt="${JAR_OPT}"
+  local server="${PACKAGE}/${JAR}"
+  fileExists "${server}" || error "Failed to locate ${server}"
+
+  # Run the server as PID 1
+  exec java ${jvm_opt} -jar ${server} ${jar_opt}
+}
+
+check_defaults
+accept_eula
+start_server