get_all_images_in_all_gitlab_projects.py

# private token or personal token authentication
import gitlab

gl = gitlab.Gitlab('https://gitlab.com', private_token='{your_token}')

# make an API request to create the gl.user object. This is mandatory if you
# use the username/password authentication.
result = []
gl.auth()
groups = gl.groups.list()
for group in groups:
    group_name = group.attributes['name']
    if 'GitLab.com' not in str(group_name):
        projects = group.projects.list(all=True)
        for prj in projects:
            project_name = prj.attributes['name']
            print(f"Processing {group_name}: {project_name}")
            id = prj.attributes['id']
            project = gl.projects.get(id)
            try:
                file = str(project.files.raw(file_path='.gitlab-ci.yml', ref='master')).split('\\n')
                for f in file:
                    if 'image:' in f:
                        result.append((group_name, prj.attributes['name'], f))
            except Exception as e:
                pass

for r in result:
    print(r)