91 lines
2.7 KiB
Docker
91 lines
2.7 KiB
Docker
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FROM "${JRE_IMAGE:-localhost/minecraft-jre}":"${JRE_TAG:-latest}"
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# Server version to download
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ARG VERSION=latest
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# PaperMC base URL
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ARG BASE_URL="https://api.papermc.io/v2/projects/velocity/versions"
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# Consider turning bStats (https://bStats.org) on but I'm turning it off by
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# default because it collects information
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ARG BSTATS_ENABLED=false
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# For the entrypoint.sh script
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ENV VELOCITY=true
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# Download files
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USER root
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WORKDIR /app
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# Install expect
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RUN apt-get update && \
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apt-get install -y expect && \
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apt-get clean && \
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rm -rf /var/lib/apt/lists/*
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# Download and verify sha256sum for Velocity
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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://api.papermc.io/v2/projects/velocity | \
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jq -r '.versions[-1]' \
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)"; \
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fi && \
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# Get latest build for the specified version
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BUILD="$( \
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curl -s "${BASE_URL}/${VERSION}" \
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| jq -r '.builds[-1]' \
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)" && \
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URL="${BASE_URL}/${VERSION}/builds/${BUILD}/downloads/velocity-${VERSION}-${BUILD}.jar" && \
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curl -s -o /tmp/server.jar "$URL" && \
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# Get SHA256 hash of server.jar and compare
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SHA256="$(sha256sum /tmp/server.jar | awk '{print $1}')" && \
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EXPECTED="$( \
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curl -s "$BASE_URL/$VERSION/builds/$BUILD" \
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| jq -r '.downloads.application.sha256' \
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)" && \
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if [ ! "$SHA256" = "$EXPECTED" ]; then \
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echo "[ERROR] SHA256=\"$SHA256\" expected \"$EXPECTED\""; \
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exit 1; \
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fi && \
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mv /tmp/server.jar /app/velocity.jar
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# Generate files as minecraft user
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USER minecraft
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WORKDIR /app
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# Start server to generate initial files
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RUN set -ux; \
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expect -c "\
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set timeout -1; \
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spawn /usr/bin/java -Xms1G -Xmx1G -XX:+UseG1GC -XX:G1HeapRegionSize=4M \
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-XX:+UnlockExperimentalVMOptions -XX:+ParallelRefProcEnabled \
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-XX:+AlwaysPreTouch -XX:MaxInlineLevel=15 -jar velocity.jar; \
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expect -re {\[[0-9]{2}:[0-9]{2}:[0-9]{2} INFO\]: Done .*!} { \
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send \"stop\r\"; \
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expect eof \
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} \
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" && \
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# Disable bStats by default and clear server-uuid
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cd /app/plugins/bStats/ || exit 1; \
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sed -i.bak "s/^enabled=.*\$/enabled=${BSTATS_ENABLED}/" config.txt && \
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diff --unified=1 config.txt.bak config.txt || true && rm config.txt.bak && \
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sed -i.bak "s/^server-uuid=.*\$/server-uuid=/" config.txt && \
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diff --unified=1 config.txt.bak config.txt || true && rm config.txt.bak && \
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# Truncate forwarding secret
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truncate -s 0 /app/forwarding.secret
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# Back to root to copy the entrypoint in
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USER root
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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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