Added option to set USE_MODPACK_START_SCRIPT=false for CF modpacks (#591)

start-deployFTB

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 . ${SCRIPTS:-/}start-utils
 
 export FTB_BASE_DIR=/data/FeedTheBeast
@@ -9,11 +11,38 @@ export TYPE=FEED-THE-BEAST
 FTB_SERVER_MOD=${FTB_SERVER_MOD:-$CF_SERVER_MOD}
 
 log "Looking for Feed-The-Beast / CurseForge server modpack."
-if [[ -z $FTB_SERVER_MOD ]]; then
-    log "Environment variable FTB_SERVER_MOD not set."
-    log "Set FTB_SERVER_MOD to the file name of the FTB server modpack."
-    log "(And place the modpack in the /data directory.)"
+requireVar FTB_SERVER_MOD
+
+if ! isTrue ${USE_MODPACK_START_SCRIPT:-true}; then
+  if ! [ -f ${FTB_SERVER_MOD} ]; then
+    log "ERROR unable to find requested modpack file ${FTB_SERVER_MOD}"
     exit 2
+  fi
+
+  log "Unpacking FTB server modpack ${FTB_SERVER_MOD} ..."
+  mkdir -p ${FTB_BASE_DIR}
+  unzip -o ${FTB_SERVER_MOD} -d ${FTB_BASE_DIR} | awk '{printf "."} END {print ""}'
+
+  forgeInstallerJar=$(find ${FTB_BASE_DIR} -name "forge*installer.jar")
+  if [[ -z "${forgeInstallerJar}" ]]; then
+    log "ERROR Unable to find forge installer in modpack."
+    log "      Make sure you downloaded the server files."
+    exit 2
+  fi
+
+  log "Installing forge server"
+  (cd $(dirname "${forgeInstallerJar}"); java -jar $(basename ${forgeInstallerJar}) --installServer) | awk '{printf "."} END {print ""}'
+
+  export SERVER=$(find ${FTB_BASE_DIR} -not -name "forge*installer.jar" -name "forge*.jar")
+  if [[ -z "${SERVER}" || ! -f "${SERVER}" ]]; then
+    log "ERROR unable to locate installed forge server jar"
+    isDebugging && find ${FTB_BASE_DIR} -name "forge*.jar"
+    exit 2
+  fi
+
+  export FTB_DIR=$(dirname "${SERVER}")
+
+  exec ${SCRIPTS:-/}start-finalSetupWorld $@
 fi
 
 entryScriptExpr="