Requirements are duplicated

[mam10eks]

requirements.txt is not used in dist/docker.
As a result, dependabot has not found the django dependency in dist/docker/Dockerfile, but in requirements.txt resulting in environments that drift apart: 005f291

I have adjusted django in dist/docker/Dockerfile manually for the moment, but dist/docker/Dockerfile should reuse existing requirements.txt. (or dev environment can be started with docker using volume mounts)