* proxy is set through build arguments.
settings stub for network, git , sudo has been removed.

* removed comments not parsed correctly by docker.

* changed: tumbleweed.docker proxy is set through build argument.

Co-authored-by: Nadeem <nadeem.shehzad@desy.de>

Due to docker-related bug:
https://bugzilla.opensuse.org/show_bug.cgi?id=1190670

Building not-found dependencies automatically breaks the idea of controlling the dependencies in Jenkins. All dependencies we need must be built explicitly as separate Jenkins projects.

- If tests are skipped, the build result will be unstable.

This reverts commit 8798bb26.

This reverts commit 4dbd7598.

The cppcheck is not run as part for build