Collapse docker/ctafrontend/ to docker/

Summary

Additional Required Actions

• Requires manual tests in pre-production: NO
• Requires a documentation update: NO

References

Closes #941 (closed)

added Continuous Integration ci: docker typemaintenance workflowin progress labels

assigned to @nbugel

requested review from @poliverc

approved this merge request

Would it be a lot of work to change docker/ctafrontend to container(s)/ ? This way it is more generic.

enabled an automatic merge when all merge checks for 1f94c07c pass

resolved all threads

merged

mentioned in commit 138fd5ce

mentioned in commit 3a6a4d1f

mentioned in commit cf498677