Dockerfile

# Minecraft 1.7.10-forge Dockerfile - Example with notes

# Use the offical Debian Docker image with a specified version tag, Jessie, so not all
# versions of Debian images are downloaded.
FROM ubuntu:18.04

#MAINTAINER aki(sousuke) <sousuke20xx@gmail.com>

# Drives which version we are going to install
ENV MINECRAFT_VERSION 1.7.10-10.13.4.1614-1.7.10

# Use APT (Advanced Packaging Tool) built in the Linux distro to download Java, a dependency
# to run Minecraft.
# First, we need to ensure the right repo is available for JRE 8
# Then we update apt
# Then we pull in all of our dependencies, 
# Finally, we download the correct .jar file using wget
#RUN echo "deb http://http.debian.net/debian jessie-backports main" > /etc/apt/sources.list.d/jessie-backports.list; \
#    apt-get -y update; \
#    apt install -y -t jessie-backports openjdk-8-jre-headless ca-certificates-java wget; \
#wget -q https://s3.amazonaws.com/Minecraft.Download/versions/${MINECRAFT_VERSION}/minecraft_server.${MINECRAFT_VERSION}.jar;

RUN apt -y update; \
    apt install -y wget; \
    wget -q https://corretto.aws/downloads/resources/8.232.09.1/java-1.8.0-amazon-corretto-jdk_8.232.09-1_amd64.deb; \
    apt install -y ./java-1.8.0-amazon-corretto-jdk_8.232.09-1_amd64.deb; \
    wget -q http://files.minecraftforge.net/maven/net/minecraftforge/forge/${MINECRAFT_VERSION}/forge-${MINECRAFT_VERSION}-installer.jar; \
    java -jar forge-${MINECRAFT_VERSION}-installer.jar --installServer;

# We do the above in a single line to reduce the number of layers in our container

# Sets working directory for the CMD instruction (also works for RUN, ENTRYPOINT commands)
# Create mount point, and mark it as holding externally mounted volume
WORKDIR /data
VOLUME /data

# Expose the container's network port: 25565 during runtime.
EXPOSE 25565

#Automatically accept Minecraft EULA, and start Minecraft server
CMD echo eula=true > /data/eula.txt && java -jar /forge-${MINECRAFT_VERSION}-universal.jar