use numeric group name when generating local files

Author: NicolasCARPi

helper.sh

@@ -41,7 +41,7 @@ function generate-ci {
 # generate the lib from a local file in current directory
 function generate-from-local {
     cleanup
-    docker run --user "$(id -u)":"$(id -gn)" --rm -v "${PWD}":/local "$docker_image" generate -i /local/openapi.yaml -l python -o /local/"$lib" -c /local/config.json --git-user-id elabftw --git-repo-id elabapi-python
+    docker run --user "$(id -u)":"$(id -g)" --rm -v "${PWD}":/local "$docker_image" generate -i /local/openapi.yaml -l python -o /local/"$lib" -c /local/config.json --git-user-id elabftw --git-repo-id elabapi-python
 }
 
 function build {