mc: support the Install.sh step of CurseForge modpacks within TYPE=FTB

fixes #180

minecraft-server/start

@@ -39,7 +39,6 @@ if [[ $PROXY ]]; then
 fi
 
 export SERVER_PROPERTIES=/data/server.properties
-export FTB_DIR=/data/FeedTheBeast
 export VERSIONS_JSON=https://launchermeta.mojang.com/mc/game/version_manifest.json
 
 echo "Checking version information."

minecraft-server/start-deployFTB

@@ -2,8 +2,9 @@
 
 . /start-utils
 
+export FTB_DIR=/data/FeedTheBeast
 legacyJavaFixerUrl=http://ftb.cursecdn.com/FTB2/maven/net/minecraftforge/lex/legacyjavafixer/1.0/legacyjavafixer-1.0.jar
-legacyJavaFixerPath=/data/FeedTheBeast/mods/legacyjavafixer.jar
+legacyJavaFixerPath=${FTB_DIR}/mods/legacyjavafixer.jar
 export TYPE=FEED-THE-BEAST
 
 echo "Looking for Feed-The-Beast server modpack."
@@ -68,5 +69,15 @@ if isTrue ${FTB_LEGACYJAVAFIXER} && [ ! -e ${legacyJavaFixerPath} ]; then
   curl -sSL -o ${legacyJavaFixerPath} ${legacyJavaFixerUrl}
 fi
 
+if [ -e ${FTB_DIR}/FTBInstall.sh ]; then
+  pushd ${FTB_DIR}
+  sh ${FTB_DIR}/FTBInstall.sh
+  popd
+elif [ -e ${FTB_DIR}/Install.sh ]; then
+  pushd ${FTB_DIR}
+  sh ${FTB_DIR}/Install.sh
+  popd
+fi
+
 # Continue to Final Setup
 exec /start-finalSetup01World $@