Update alpine.func

fix open bracket

misc/alpine.func

@@ -353,7 +353,7 @@ build_container() {
   export APPLICATION="$APP"
   export VERBOSE="$VERB"
   export SSH_ROOT="${SSH}"
-  export CTID=$CT_ID"
+  export CTID="$CT_ID"
   export PCT_OSTYPE="$var_os"
   export PCT_OSVERSION="$var_version"
   export PCT_DISK_SIZE="$DISK_SIZE"