minecraft/dockerfiles/Dockerfile.velocity
Kris Lamoureux f83c8499e6
Implement basic Velocity proxy
- Split entrypoint into functions for Minecraft and Velocity
- Implement Velocity Dockerfile based on JRE image
- Add velocity default build to ./builds
- Change error to warning for missing plugins.json build file
2024-05-25 23:56:43 -04:00

91 lines
2.7 KiB
Docker

FROM "${JRE_IMAGE:-localhost/minecraft-jre}":"${JRE_TAG:-latest}"
# Server version to download
ARG VERSION=latest
# PaperMC base URL
ARG BASE_URL="https://api.papermc.io/v2/projects/velocity/versions"
# Consider turning bStats (https://bStats.org) on but I'm turning it off by
# default because it collects information
ARG BSTATS_ENABLED=false
# For the entrypoint.sh script
ENV VELOCITY=true
# Download files
USER root
WORKDIR /app
# Install expect
RUN apt-get update && \
apt-get install -y expect && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
# Download and verify sha256sum for Velocity
RUN set -eux && \
# Grab latest version if not specified
if [ "$VERSION" = "latest" ]; then \
VERSION="$( \
curl -s https://api.papermc.io/v2/projects/velocity | \
jq -r '.versions[-1]' \
)"; \
fi && \
# Get latest build for the specified version
BUILD="$( \
curl -s "${BASE_URL}/${VERSION}" \
| jq -r '.builds[-1]' \
)" && \
URL="${BASE_URL}/${VERSION}/builds/${BUILD}/downloads/velocity-${VERSION}-${BUILD}.jar" && \
curl -s -o /tmp/server.jar "$URL" && \
# Get SHA256 hash of server.jar and compare
SHA256="$(sha256sum /tmp/server.jar | awk '{print $1}')" && \
EXPECTED="$( \
curl -s "$BASE_URL/$VERSION/builds/$BUILD" \
| jq -r '.downloads.application.sha256' \
)" && \
if [ ! "$SHA256" = "$EXPECTED" ]; then \
echo "[ERROR] SHA256=\"$SHA256\" expected \"$EXPECTED\""; \
exit 1; \
fi && \
mv /tmp/server.jar /app/velocity.jar
# Generate files as minecraft user
USER minecraft
WORKDIR /app
# Start server to generate initial files
RUN set -ux; \
expect -c "\
set timeout -1; \
spawn /usr/bin/java -Xms1G -Xmx1G -XX:+UseG1GC -XX:G1HeapRegionSize=4M \
-XX:+UnlockExperimentalVMOptions -XX:+ParallelRefProcEnabled \
-XX:+AlwaysPreTouch -XX:MaxInlineLevel=15 -jar velocity.jar; \
expect -re {\[[0-9]{2}:[0-9]{2}:[0-9]{2} INFO\]: Done .*!} { \
send \"stop\r\"; \
expect eof \
} \
" && \
# Disable bStats by default and clear server-uuid
cd /app/plugins/bStats/ || exit 1; \
sed -i.bak "s/^enabled=.*\$/enabled=${BSTATS_ENABLED}/" config.txt && \
diff --unified=1 config.txt.bak config.txt || true && rm config.txt.bak && \
sed -i.bak "s/^server-uuid=.*\$/server-uuid=/" config.txt && \
diff --unified=1 config.txt.bak config.txt || true && rm config.txt.bak && \
# Truncate forwarding secret
truncate -s 0 /app/forwarding.secret
# Back to root to copy the entrypoint in
USER root
COPY ../entrypoint.sh /usr/local/bin/entrypoint.sh
RUN chmod +x /usr/local/bin/entrypoint.sh
# Run app as minecraft user
USER minecraft
WORKDIR /app
# Expose port and run entrypoint script
EXPOSE 25565
ENTRYPOINT ["entrypoint.sh"]