Fix CI/CD pipeline
For now, use specific versions for some packages, instead of HEAD
of the default branch. For this to work, some fixes were needed to the Dockerfile
that is being used to build the Rapthor docker image.
TODO: Update the Dockerfile
so that we can use HEAD
of the default branch again for all packages.
Related to RAP-909, and RAP-417
Closes RAP-908
Edited by Marcel Loose