FROM openjdk:alpine

LABEL maintainer "Terence Westphal"

# Use default value if the build argument is not set
ARG VERSION=1.11.2

ENV MC_VERSION=${VERSION}
ENV PACKAGE="/opt/minecraft"
ENV JAR="minecraft_server.${MC_VERSION}.jar"
ENV JAR_OPT="nogui"
ENV WORKDIR="/srv/minecraft"
ENV PATH="${PACKAGE}/scripts:$PATH"

# Update the system
RUN apk upgrade --no-cache --purge -v

# Download Minecraft Server
ADD https://s3.amazonaws.com/Minecraft.Download/versions/${MC_VERSION}/${JAR} ${PACKAGE}/${JAR}

# Add package content
ADD ./defaults/* ${PACKAGE}/defaults/
ADD ./scripts/* ${PACKAGE}/scripts/

# Serve the content from the WORKDIR
WORKDIR ${WORKDIR}

# Expose the container's WORKDIR
VOLUME ${WORKDIR}

# Expose the container's network port
EXPOSE 25565

# Start the Minecraft server
ENTRYPOINT ["start.sh"]