fix: fix uncatched IndexError if no arguments are passed

generate_gitlabci.py

-import os
 import glob
 import sys
 
@@ -15,8 +14,11 @@
       --destination $CI_REGISTRY_IMAGE/{project}
 '''
 
-if sys.argv[1]:
-    TEMPLATE += f"      --build-arg {sys.argv[1]}={sys.argv[2]}"
+try:
+    if sys.argv[1]:
+        TEMPLATE += f"      --build-arg {sys.argv[1]}={sys.argv[2]}"
+except IndexError:
+    pass
 
 with open('.gitlab-ci.yml', 'w') as f:
     for filepath in sorted(glob.glob('library/**/Dockerfile', recursive=True)):