SpongeVanilla integration and JSON check fix

minecraft-server/Dockerfile

@@ -44,6 +44,6 @@ ENTRYPOINT [ "/start" ]
 ENV UID=1000 GID=1000 \
     MOTD="A Minecraft Server Powered by Docker" \
     JVM_XX_OPTS="-XX:+UseG1GC" MEMORY="1G" \
-    TYPE=VANILLA VERSION=LATEST FORGEVERSION=RECOMMENDED SPONGEBRANCH=STABLE LEVEL=world PVP=true \
-    DIFFICULTY=easy ENABLE_RCON=true RCON_PORT=25575 RCON_PASSWORD=minecraft \
+    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= ONLINE_MODE=TRUE CONSOLE=true

minecraft-server/start-configuration

@@ -73,6 +73,10 @@ case "$TYPE" in
     exec /start-deployVanilla $@
   ;;
 
+  SPONGEVANILLA|spongevanilla)
+    exec /start-deploySpongeVanilla $@
+  ;;
+
   *)
       echo "Invalid type: '$TYPE'"
       echo "Must be: VANILLA, FORGE, BUKKIT, SPIGOT, PAPER, FTB, SPONGEVANILLA"

minecraft-server/start-deploySpongeVanilla

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+export TYPE=spongevanilla
+
+# Parse branch
+echo "Choosing branch for Sponge"
+case "$SPONGEBRANCH" in
+
+  EXPERIMENTAL|experimental|BLEEDING|bleeding)
+    SPONGEBRANCH=bleeding
+  ;;
+
+  *)
+    SPONGEBRANCH=stable
+  ;;
+
+esac
+
+# If not SPONGEVERSION selected, detect last version on selected branch
+if [ -z $SPONGEVERSION ]; then
+  echo "Choosing Version for Sponge"
+  if [ "$SPONGEBRANCH" == "stable" ]; then
+    export SPONGEVERSION=`curl -fsSL https://dl-api.spongepowered.org/v1/org.spongepowered/$TYPE | jq -r '.buildTypes.stable.latest.version'`
+  else
+    export SPONGEVERSION=`curl -fsSL https://dl-api.spongepowered.org/v1/org.spongepowered/$TYPE | jq -r '.buildTypes.bleeding.latest.version'`
+  fi
+fi
+
+export SERVER="spongevanilla-$SPONGEVERSION.jar"
+
+if [ ! -e $SERVER ]; then
+  echo "Downloading $SERVER ..."
+  wget -q https://repo.spongepowered.org/maven/org/spongepowered/$TYPE/$SPONGEVERSION/$SERVER
+fi
+
+# Continue to Final Setup
+exec /start-finalSetup01World $@

minecraft-server/start-minecraftFinalSetup

@@ -24,12 +24,17 @@ if [ -n "$ICON" -a ! -e server-icon.png ]; then
 fi
 
 # Make sure files exist and are valid JSON (for pre-1.12 to 1.12 upgrades)
-for j in *.json; do
-  if [[ $(python -c "print open('$j').read().strip()==''") = True ]]; then
-    echo "Fixing JSON $j"
-    echo '[]' > $j
-  fi
-done
+if [[ -z "ls *.json" ]]; then
+  echo "Checking JSON files"
+  for j in *.json; do
+    if [[ $(python -c "print open('$j').read().strip()==''") = True ]]; then
+      echo "Fixing JSON $j"
+      echo '[]' > $j
+    fi
+  done
+else
+  echo "Skipping JSON check. No files present."
+fi
 
 # If any modules have been provided, copy them over
 mkdir -p /data/mods