Support postprocessing of instances

duylethanh commented 3 years ago

This PR contains the following:

support arbitrary postprocessing of instances by allowing a list of dictionaries containing the args, workdir and environ keys in the postprocess key (like the build arguments in compile, configure, ...)
documentation on postprocessing of instances
tests for postprocessing of instances
remove assert file_size > 0 while testing the installation process (so we can have empty (dummy) instances; also it should suffice to only check for the existence of instance files)

duylethanh commented 3 years ago

PR ready for review

duylethanh commented 2 years ago

Fixed the merge conflicts for now. When the remarks above are resolved or ok with you I will mark this PR as ready for review again.

hu-macsy / simexpal