Create specific Dockerfiles for Minecraft setups
- Decompose Dockerfile into modular components - Establish building JRE and JDK images from Docker.java - Establish Dockerfile.vanilla for vanilla server setup - Establish Dockerfile.bukkit for Spigot and CraftBukkit - Establish a comprehensive Makefile for building and managing - Add docker-compose.build.yml for streamlined image construction - Use docker-compose.yml to test built images without a volume
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71
dockerfiles/Dockerfile.bukkit
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71
dockerfiles/Dockerfile.bukkit
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# Build from OpenJDK image
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FROM "${JDK_IMAGE:-localhost/minecraft-jdk}":"${JDK_TAG:-latest}" as build
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# Minecraft version
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ARG VERSION=latest
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# Defaults to building Spigot over CraftBukkit
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ARG SPIGOT=true
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# SpigotMC BuildTools URL
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ARG BASE_URL="https://hub.spigotmc.org/jenkins/job/BuildTools/"
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ARG ARTIFACT_PATH="lastSuccessfulBuild/artifact/target/BuildTools.jar"
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# Build in common container location
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WORKDIR /build
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# Download and build Spigot using BuildTools
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RUN set -ux && \
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# Grab latest version if not specified
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if [ "$VERSION" = "latest" ]; then \
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VERSION="$( \
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curl -s https://launchermeta.mojang.com/mc/game/version_manifest.json \
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| jq -r '.latest.release' \
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)"; \
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fi && \
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# Download BuildTools.jar
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curl -s -o BuildTools.jar "${BASE_URL}${ARTIFACT_PATH}" && \
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# Build Craftbukkit if SPIGOT is false
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case "$SPIGOT" in \
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true) \
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BUILD_TYPE='SPIGOT' ;; \
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false) \
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BUILD_TYPE='CRAFTBUKKIT' ;; \
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*) \
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echo "ERROR: Invalid value for SPIGOT. Set to 'true' or 'false'"; \
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exit 1 ;; \
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esac && \
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# Run BuildTools to build specified version
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java -jar BuildTools.jar --rev "$VERSION" --compile "$BUILD_TYPE" && \
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ln -s \
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"$(echo $BUILD_TYPE | tr '[:upper:]' '[:lower:]')-${VERSION}.jar" \
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"server.jar"
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# Use OpenJRE image for runtime
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FROM "${JRE_IMAGE:-localhost/minecraft-jre}":"${JRE_TAG:-latest}" as runtime
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# Run as Minecraft user
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USER minecraft
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WORKDIR /app
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# Copy the built bukkit jar from the build stage
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COPY --from=build /build/server.jar /app/server.jar
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# Generate initial settings
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RUN java -jar server.jar --initSettings --nogui
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# Back to root to copy the entrypoint in
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USER root
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WORKDIR /app
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# Copy in entrypoint script
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COPY ../entrypoint.sh /usr/local/bin/entrypoint.sh
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RUN chmod +x /usr/local/bin/entrypoint.sh
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# Run app as minecraft user
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USER minecraft
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WORKDIR /app
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# Expose port and run entrypoint script
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EXPOSE 25565
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ENTRYPOINT ["entrypoint.sh"]
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60
dockerfiles/Dockerfile.java
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60
dockerfiles/Dockerfile.java
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FROM debian:stable-slim
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ARG JAVA_RUNTIME
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ARG JAVA_VERSION=latest
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ENV DEBIAN_FRONTEND=noninteractive
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# Install scripting dependencies
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RUN apt-get update && \
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apt-get install -y curl git gpg jq && \
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apt-get clean && \
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rm -rf /var/lib/apt/lists/*
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# Eclipse Adoptium DEB installer package
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RUN set -ux && \
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# Download the Eclipse Adoptium GPG key
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curl -s https://packages.adoptium.net/artifactory/api/gpg/key/public \
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| gpg --dearmor | tee /etc/apt/trusted.gpg.d/adoptium.gpg > /dev/null && \
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# Configure the Eclipse Adoptium APT repository
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VERSION_CODENAME="$(awk -F= '/^VERSION_CODENAME/{print $2}' /etc/os-release)" && \
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echo "deb https://packages.adoptium.net/artifactory/deb $VERSION_CODENAME main" \
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| tee /etc/apt/sources.list.d/adoptium.list
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# Install Adoptium Temurin (OpenJDK/OpenJRE)
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RUN set -ux && \
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# Grab latest LTS version if not specified
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if [ "$JAVA_VERSION" = "latest" ]; then \
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JAVA_VERSION="$( \
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curl -s https://api.adoptium.net/v3/info/available_releases \
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| jq '.most_recent_lts' \
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)"; \
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fi && \
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# Install OpenJDK if JAVA_RUNTIME is false
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case "$JAVA_RUNTIME" in \
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true) \
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JAVA_TYPE='jre' ;; \
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false) \
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JAVA_TYPE='jdk' ;; \
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*) \
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echo "ERROR: Invalid value for JAVA_RUNTIME. Set to 'true' or 'false'"; \
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exit 1 ;; \
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esac && \
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# Install the Temurin version
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apt-get update && \
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apt-get install -y "temurin-$JAVA_VERSION-$JAVA_TYPE" && \
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apt-get clean && \
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rm -rf /var/lib/apt/lists/*
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# Create minecraft user for runtime
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RUN if [ "$JAVA_RUNTIME" = "true" ]; then \
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groupadd -g 1000 minecraft && \
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useradd -m -u 1000 -g 1000 -d /app minecraft; \
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fi
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# Install additional runtime dependencies
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RUN if [ "$JAVA_RUNTIME" = "true" ]; then \
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apt-get update && \
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apt-get install -y procps screen strace && \
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apt-get clean && \
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rm -rf /var/lib/apt/lists/*; \
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fi
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49
dockerfiles/Dockerfile.vanilla
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49
dockerfiles/Dockerfile.vanilla
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FROM "${JRE_IMAGE:-localhost/minecraft-jre}":"${JRE_TAG:-latest}"
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# Minecraft version to download
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ARG VERSION=latest
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# Download files and run as user
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USER minecraft
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WORKDIR /app
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# Download and verify sha1sum for server.jar
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RUN set -ux && \
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# Grab latest version if not specified
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if [ "$VERSION" = "latest" ]; then \
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VERSION="$( \
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curl -s https://launchermeta.mojang.com/mc/game/version_manifest.json \
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| jq -r '.latest.release' \
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)"; \
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fi && \
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# Get server.jar based on $VERSION
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curl -s https://launchermeta.mojang.com/mc/game/version_manifest.json \
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| jq -r --arg id "$VERSION" '.versions[] | select(.id == $id) | .url' \
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| xargs curl -s | jq -r '.downloads.server' | tee "/tmp/dl.json" \
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| jq -r '.url' | xargs curl -s -o server.jar && \
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# Get SHA1 hash of server.jar and compare
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SHA1="$(sha1sum server.jar | awk '{print $1}')" && \
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EXPECTED="$(jq -r .sha1 /tmp/dl.json)"; rm /tmp/dl.json && \
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if [ ! "$SHA1" = "$EXPECTED" ]; then \
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echo "[ERROR] SHA1=\"$SHA1\" expected \"$EXPECTED\""; \
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exit 1; \
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fi
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# Generate initial settings
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RUN java -jar server.jar --initSettings --nogui
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# Back to root to copy the entrypoint in
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USER root
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WORKDIR /app
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# Copy in entrypoint script
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COPY ../entrypoint.sh /usr/local/bin/entrypoint.sh
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RUN chmod +x /usr/local/bin/entrypoint.sh
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# Run app as minecraft user
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USER minecraft
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WORKDIR /app
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# Expose port and run entrypoint script
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EXPOSE 25565
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ENTRYPOINT ["entrypoint.sh"]
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