inital commit

Makefile

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+WORKING_DIR := $(shell pwd)
+
+test:
+	docker run -it --name mc-test -p 25565:25565 --rm -v $(WORKING_DIR)/spigot:/mc \
+		-w /mc openjdk java -Xms1G -Xmx4G -server -jar spigot.jar nogui
+
+up: 
+	systemctl start mc-server.service
+
+down:
+	systemctl stop mc-server.service
+
+include build/Makefile

README.md

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+# Running a Minecraft server (spigot) inside of docker
+This is a all in one setup to run a Spigot server using docker. It also includes
+a systemd unit file for setting it up to run automaticaly.
+
+## Building
+> make build-latest
+ - builds the latest version of of spigot
+ 
+## deploying 
+> make deploy
+ - copies the latest build into the running directory
+
+## Running
+> make test
+ - run a test instance of the server
+
+### Systemd unit file (mc-server.service)
+1. assumes the working directory to be `/mc`, change it on line 7
+2. copy to systemd config folder (/etc/systemd/system/ on Ubuntu) 
+
+> make up
+ - start the systemd service
+
+> make down
+ - top the systemd service
+
+

build/Dockerfile

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+FROM openjdk:9-jdk-slim
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git \
+		openssh-client \
+		procps \
+		ca-certificates \
+		&& rm -rf /var/lib/apt/lists/*
+										    

build/Makefile

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+LATEST := $(shell ls -rt build/spigot*.jar | tail -1)
+
+deploy: build-latest spigot
+	cp $(LATEST) spigot/spigot.jar
+
+deploy-1.15.2: build/spigot-1.15.2.jar spigot
+	cp build/spigot-1.15.2.jar spigot/spigot.jar
+
+build-latest: build-image
+	docker run -it --rm -v $(WORKING_DIR)/build:/mc -w /mc java-build java -cp /mc \
+		-jar BuildTools.jar
+
+build/spigot-1.15.2.jar: build-image
+	docker run -it --rm -v $(WORKING_DIR)/build:/mc -w /mc java-build java -cp /mc \
+		-jar BuildTools.jar --rev 1.15.2
+
+build-image: build/BuildTools.jar
+	docker build -t java-build build/
+
+build/BuildTools.jar:
+	curl -o build/BuildTools.jar \
+		https://hub.spigotmc.org/jenkins/job/BuildTools/lastSuccessfulBuild/artifact/target/BuildTools.jar
+
+spigot:
+	mkdir spigot

mc-server.service

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+[Unit]
+Description=Minecraft Server
+After=docker.service
+Requires=docker.service
+
+[Service]
+Environment="MC_DIR=/mc"
+Restart=Always
+ExecStart=/usr/bin/docker run -t --name mc -p 25565:25565 --rm -v ${MC_DIR}/spigot:/mc -w /mc openjdk java -Xms1G -Xmx4G -server -jar spigot.jar nogui
+ExecStop=/usr/bin/docker container stop mc
+
+[Install]
+WantedBy=multi-user.target