initial commit

paper/Dockerfile

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+FROM alpine:latest
+
+ARG JAVA=openjdk17
+RUN apk add --upgrade $JAVA curl jq
+
+ADD ./bin /usr/local/bin
+
+RUN adduser -D minecraft
+
+RUN mkdir /minecraft && chown -R minecraft /minecraft
+
+VOLUME ["/minecraft"]
+
+WORKDIR /minecraft
+
+USER minecraft
+
+EXPOSE 25565
+
+ARG MC_VERSION
+ENV MC_VERSION=${MC_VERSION:-1.19.4}
+
+CMD sh -c "download_mc $MC_VERSION && java -Xmx2G -Xms2G -jar paper.jar"

paper/bin/download_mc

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+#!/bin/sh
+
+if test "$EULA" != "true"; then
+	echo "You need to accept the Mojang EULA (using -e EULA=true) to run the server"
+	exit 1
+fi
+
+meta_dir="docker_meta"
+
+if test ! -f "$meta_dir/setup_done"; then
+	# TODO: Use config/paper-global.yml with new config keys for 1.19+ Paper
+	config_path="paper.yml"
+
+	config=""
+
+	if test "$VELOCITY_ENABLE" = "true"; then
+		echo "online-mode=false" > server.properties
+
+		velocity=$(cat << EOF
+settings:
+  velocity-support:
+    enabled: true
+    online-mode: true
+    secret: '$VELOCITY_SECRET'
+EOF
+		)
+
+		config="${config}${velocity}"
+	fi
+
+	if test ! -z "$config"; then
+		echo "Writing config"
+		echo "$config" > $config_path
+	fi
+
+	mkdir -p "$meta_dir" && touch "$meta_dir/setup_done"
+else
+	echo "Setup is done"
+fi
+
+version=$1
+echo "Downloading version $version"
+
+apiURL=https://api.papermc.io/v2/projects/paper
+
+build=$(curl -X GET $apiURL/versions/$version/builds | jq -r ".builds[-1].build")
+echo "Build is $build"
+
+url=$apiURL/versions/$version/builds/$build/downloads/paper-$version-$build.jar
+echo "Full URL is: $url"
+
+echo "Downloading to $PWD"
+wget -O paper.jar $url
+
+echo "eula=true" > eula.txt

paper/build_all_versions.sh

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+#!/bin/bash
+
+#!/bin/sh
+
+declare -A versions
+versions["1.8.8"]=openjdk8
+versions["1.9.4"]=openjdk8
+versions["1.10.2"]=openjdk8
+versions["1.11.2"]=openjdk8
+versions["1.12.2"]=openjdk8
+versions["1.13.2"]=openjdk8
+versions["1.14.4"]=openjdk8
+versions["1.15.2"]=openjdk8
+versions["1.16.5"]=openjdk8
+versions["1.17.1"]=openjdk8
+versions["1.18.2"]=openjdk17
+versions["1.19.4"]=openjdk17
+
+for version in "${!versions[@]}"; do
+	java_version="${versions[$version]}"
+	echo $version $java_version
+	docker build --build-arg MC_VERSION=$version --build-arg JAVA=$java_version -t mrletsplay/paper:$version .
+done

velocity-compose/.env

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+EULA=true
+VELOCITY_ENABLE=true
+VELOCITY_SECRET=REPLACE_THIS_WITH_A_RANDOM_SECRET

velocity-compose/docker-compose.yml

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+services:
+  velocity:
+    image: mrletsplay/velocity
+    ports:
+      - "25565:25577"
+    volumes:
+      - "./velocity:/velocity"
+    networks:
+      - velocity
+    environment:
+      - "VELOCITY_SECRET=${VELOCITY_SECRET}"
+  server1:
+    image: mrletsplay/paper:1.18.2
+    stdin_open: true
+    tty: true
+    volumes:
+      - "./server1:/minecraft"
+    networks:
+      - velocity
+    environment:
+      - "EULA=${EULA}"
+      - "VELOCITY_ENABLE=${VELOCITY_ENABLE}"
+      - "VELOCITY_SECRET=${VELOCITY_SECRET}"
+  server2:
+    image: mrletsplay/paper:1.18.2
+    stdin_open: true
+    tty: true
+    volumes:
+      - "./server2:/minecraft"
+    networks:
+      - velocity
+    environment:
+      - "EULA=${EULA}"
+      - "VELOCITY_ENABLE=${VELOCITY_ENABLE}"
+      - "VELOCITY_SECRET=${VELOCITY_SECRET}"
+networks:
+  velocity:

velocity/Dockerfile

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+FROM alpine:latest
+
+RUN apk add --upgrade openjdk17 curl jq
+
+ADD ./bin /usr/local/bin
+
+RUN adduser -D velocity
+
+RUN mkdir /velocity && chown -R velocity /velocity
+
+VOLUME ["/velocity"]
+
+WORKDIR /velocity
+
+USER velocity
+
+EXPOSE 25577
+
+CMD sh -c "download_velocity && java -Xmx500M -Xms500M -jar velocity.jar"

velocity/bin/download_velocity

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+#!/bin/sh
+
+meta_dir="docker_meta"
+
+if test ! -f "$meta_dir/setup_done"; then
+	if test "$VELOCITY_SECRET" = "REPLACE_THIS_WITH_A_RANDOM_SECRET"; then
+		echo "Refusing to configure Velocity with insecure secret"
+		exit 1
+	fi
+
+	echo "$VELOCITY_SECRET" > forwarding.secret
+
+	mkdir -p "$meta_dir" && touch "$meta_dir/setup_done"
+else
+	echo "Setup is done"
+fi
+
+apiURL=https://api.papermc.io/v2/projects/velocity
+
+version=$(curl -X GET $apiURL | jq -r ".versions[-1]")
+echo "Version is $version"
+
+build=$(curl -X GET $apiURL/versions/$version/builds | jq -r ".builds[-1].build")
+echo "Build is $build"
+
+url=$apiURL/versions/$version/builds/$build/downloads/velocity-$version-$build.jar
+echo "Full URL is: $url"
+
+echo "Downloading to $PWD"
+wget -O velocity.jar $url