mc: remove the need for entrypoint script to run as root

minecraft-server/Dockerfile

@@ -21,10 +21,7 @@ HEALTHCHECK CMD mcstatus localhost ping
 
 RUN addgroup -g 1000 minecraft \
   && adduser -Ss /bin/false -u 1000 -G minecraft -h /home/minecraft minecraft \
-  && mkdir /data \
-  && mkdir /config \
-  && mkdir /mods \
-  && mkdir /plugins \
+  && mkdir -m 777 /data /mods /config /plugins \
   && chown minecraft:minecraft /data /config /mods /plugins /home/minecraft
 
 EXPOSE 25565 25575
@@ -34,16 +31,17 @@ ADD https://github.com/itzg/rcon-cli/releases/download/1.3/rcon-cli_linux_amd64
 COPY mcadmin.jq /usr/share
 RUN chmod +x /usr/local/bin/*
 
-VOLUME ["/data","/mods","/config","/plugins","/home/minecraft"]
+VOLUME ["/data","/mods","/config","/plugins"]
 COPY server.properties /tmp/server.properties
 WORKDIR /data
 
 ENTRYPOINT [ "/start" ]
 
-ENV UID=1000 GID=1000 \
-    JVM_XX_OPTS="-XX:+UseG1GC" MEMORY="1G" \
+ENV JVM_XX_OPTS="-XX:+UseG1GC" MEMORY="1G" \
     TYPE=VANILLA VERSION=LATEST FORGEVERSION=RECOMMENDED SPONGEBRANCH=STABLE SPONGEVERSION= LEVEL=world \
     PVP=true DIFFICULTY=easy ENABLE_RCON=true RCON_PORT=25575 RCON_PASSWORD=minecraft \
     LEVEL_TYPE=DEFAULT GENERATOR_SETTINGS= WORLD= MODPACK= SERVER_PORT=25565 ONLINE_MODE=TRUE CONSOLE=true
 
 COPY start* /
+
+USER minecraft