Add basic Dockerfile to compile and run a server

Dockerfile

@@ -0,0 +1,33 @@
+FROM maven:3-jdk-8-alpine
+
+# Install proper packages and setup git
+RUN apk add patch --update && \
+	apk add --no-cache git && \
+  	git config --global user.email "[email protected]" && \
+  	git config --global user.name "Ashcon Partovi"
+
+# Copy over project files into workspace
+WORKDIR build
+COPY . .
+RUN chmod a+x scripts/*
+
+# Generate the patches
+RUN ./sportpaper rebuild
+
+# Build the JAR
+RUN ./sportpaper build
+
+FROM openjdk:8-jre-alpine
+
+# Copy over assets from build to the server workspace
+WORKDIR server
+COPY --from=0 build/SportPaper-Server/target/sportpaper*.jar sportpaper.jar
+COPY sportpaper.yml .
+
+# Install useful plugins for debugging
+ADD https://ci.viaversion.com/job/ViaVersion/lastSuccessfulBuild/artifact/jar/target/ViaVersion-2.0.2-SNAPSHOT.jar plugins/viaversion.jar
+ADD https://dev.bukkit.org/projects/worldedit/files/2597538/download plugins/worldedit.jar
+
+# Run the server with recommended flags from https://mcflags.emc.gs
+EXPOSE 25565
+CMD java -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:MaxGCPauseMillis=100 -XX:+DisableExplicitGC -XX:TargetSurvivorRatio=90 -XX:G1NewSizePercent=50 -XX:G1MaxNewSizePercent=80 -XX:G1MixedGCLiveThresholdPercent=35 -XX:+AlwaysPreTouch -XX:+ParallelRefProcEnabled -XX:+UseLargePagesInMetaspace -jar sportpaper.jar

sportpaper.yml

@@ -388,7 +388,7 @@ paper:
 
     # Duration to wait before suspending an server
     # with no players online.
-    empty-server-suspend: PT0S
+    empty-server-suspend: PT1M
 
     # Whether arrow projectiles should have a random factor.
     include-randomness-in-arrow-trajectory: false