50 lines
1.4 KiB
Docker
50 lines
1.4 KiB
Docker
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 -eux && \
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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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