$ docker build -t gw-validator .
$ docker run --rm -v "${PWD}/file.json":"/app/creds.json" gw-validator \
-jwtfile "/app/creds.json" \
-delegated_account "[email protected]" \
-scopes "https://www.googleapis.com/auth/admin.reports.audit.readonly" \
-endpoint "https://www.googleapis.com/admin/reports/v1/activity/users/all/applications/admin"