Polishing up

config

@@ -13,3 +13,10 @@ FIRST_USER_PASS="letmein"
 DISABLE_FIRST_BOOT_USER_RENAME=1
 WPA_COUNTRY=US
 ENABLE_SSH=0
+STAGE_LIST=""
+for d in stage*; do
+    if [ -d "$d" ] && [ ! -f "$d/SKIP" ]; then
+        STAGE_LIST+="$d "
+    fi
+done
+STAGE_LIST="$(echo "$STAGE_LIST" | xargs)"