minecraft/Dockerfile

FROM alpine:3.13 as builder

RUN apk --no-cache add \
    openjdk8 \
    git \
    maven

ENV BUILDTOOLS_VERSION=abd1c566d8cd758bac3a9d67543b719d4b9ab673
RUN git clone https://hub.spigotmc.org/stash/scm/spigot/buildtools.git

WORKDIR /buildtools
RUN git checkout "$BUILDTOOLS_VERSION"
RUN mvn package

ENV SPIGOT_VERSION=1.16.5
RUN java -jar target/BuildTools.jar --rev "$SPIGOT_VERSION"
RUN mv spigot-$SPIGOT_VERSION.jar spigot.jar

FROM thallian/confd-env:latest

COPY --from=builder /buildtools/spigot.jar /var/lib/minecraft/spigot.jar

RUN apk add --no-cache \
    openjdk8 \
    openssl

RUN addgroup minecraft -g 2222
RUN adduser -u 2222 -h /var/lib/minecraft -D -G minecraft minecraft

RUN mkdir -p /etc/services.d/minecraft/

ADD /rootfs /

RUN chown -R minecraft:minecraft /var/lib/minecraft

VOLUME /var/lib/minecraft/world /var/lib/minecraft/world_nether /var/lib/minecraft/world_the_end /var/lib/minecraft/plugins

EXPOSE 25565