Gitlab docker image is missing /opt/gitlab/embedded/include/

I think this is basically what is explain here https://forum.gitlab.com/t/gitlab-ce-is-missing-opt-gitlab-embedded-include-for-ci/16222

I tried to installed the 'requests' python package in my docker image but the following error is reported: FileNotFoundError: [Errno 2] No such file or directory: '/opt/gitlab/embedded/include/python3.4m/pyconfig.h'

We are using GitLab Community Edition 11.7.4