Merge pull request #152 from dschaper/patch-3

Add optional `nogui`

minecraft-server/start-minecraft.sh

@@ -503,12 +503,17 @@ if [ "$TYPE" = "SPIGOT" ]; then
   fi
 fi
 
-if [[ $CONSOLE = false ]]; then
-  EXTRA_ARGS=--noconsole
-else
-  EXTRA_ARGS=""
+EXTRA_ARGS=""
+# Optional disable console
+if [[ ${CONSOLE} = false || ${CONSOLE} = FALSE ]]; then
+  EXTRA_ARGS+="--noconsole"
 fi
 
+# Optional disable GUI for headless servers
+if [[ ${GUI} = false || ${GUI} = FALSE ]]; then
+  EXTRA_ARGS="${EXTRA_ARGS} nogui"
+fi 
+
 # put these prior JVM_OPTS at the end to give any memory settings there higher precedence
 echo "Setting initial memory to ${INIT_MEMORY:-${MEMORY}} and max to ${MAX_MEMORY:-${MEMORY}}"
 JVM_OPTS="-Xms${INIT_MEMORY:-${MEMORY}} -Xmx${MAX_MEMORY:-${MEMORY}} ${JVM_OPTS}"