from user slices and set the default task limit to infinity. Previously,
the task limit on the `user-*.slice` units was 675, which can become a
problem in CI jobs that fork a lot, causing spurious CI failures.
Signed-off-by: Andreas Hartmann <hartan@7x.de>
to make it plain where each file belongs in the containers file system
and to simplify the `ADD` directives in the Containerfile.
Signed-off-by: Andreas Hartmann <hartan@7x.de>