Developers tools to test yum and rpm.

For example, you want to create an RPM repository. You create a directory (say, /home/yegor/repo) and place all your .rpm files there. Then, you execute createrepo to create meta files:

$ docker run --rm -v /home/yegor/repo:/repo yegor256/yum-utils createrepo /repo

Then, you may want to list all artifacts in the repo at /home/yegor/repo:

$ docker run --rm -v /home/yegor/repo:/repo yegor256/yum-utils \
  /bin/bash -c "yum-config-manager --add-repo file:///repo; \
  yum --disablerepo='*' --enablerepo='repo' list available"

Should work.