Description
Background
Usually, the package lists for install scripts don't contain all packages, only those which must be in the container. However, package systems will install further package to resolve dependencies. With the list of actually installed packages, we can better trace back what is in the container and can use diagnostic UDF to show what is available in an installed container. Furthermore, we can check if all packages got installed which is important for R because it can silently omit packages and it can be difficult to recognize such an error in the build logs.
In #92 we already retrieve the actually installed packages for the release step. Now we can use this info to compare if the actually installed and requested packages do match.
Acceptance Criteria
Compare the actual installed packages with requested ones and fail the build if requested once are not available. This requires that all flavors and steps use the new install script and their package list format.