Investigate and fix image build failures

[lbarcziova]

Our recent automatic image builds are frequently failing due to network errors, requiring multiple manual retries. This process takes too much time to get a usable build, which is unacceptable when we need to deploy an urgent fix.

Example: https://github.com/packit/packit-service/actions/runs/16138635756/job/45547324065

• [ ] Investigate the root cause of these transient network errors during the build process.
• [ ] Implement a fix or a reliable workaround to ensure stability, consider alternative solutions to what we use now

[nforro]

The errors seem to usually occur in the ansible dnf module that produces a traceback like this:

Traceback (most recent call last):
  File "/src/files/~packit/.ansible/tmp/ansible-tmp-1751970564.7063925-154-159875683464028/AnsiballZ_dnf5.py", line 107, in <module>
    _ansiballz_main()
    ~~~~~~~~~~~~~~~^^
  File "/src/files/~packit/.ansible/tmp/ansible-tmp-1751970564.7063925-154-159875683464028/AnsiballZ_dnf5.py", line 99, in _ansiballz_main
    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/src/files/~packit/.ansible/tmp/ansible-tmp-1751970564.7063925-154-159875683464028/AnsiballZ_dnf5.py", line 47, in invoke_module
    runpy.run_module(mod_name='ansible.modules.dnf5', init_globals=dict(_module_fqn='ansible.modules.dnf5', _modlib_path=modlib_path),
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                     run_name='__main__', alter_sys=True)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen runpy>", line 226, in run_module
  File "<frozen runpy>", line 98, in _run_module_code
  File "<frozen runpy>", line 88, in _run_code
  File "/tmp/ansible_ansible.legacy.dnf5_payload_0aw0s5cy/ansible_ansible.legacy.dnf5_payload.zip/ansible/modules/dnf5.py", line 777, in <module>
  File "/tmp/ansible_ansible.legacy.dnf5_payload_0aw0s5cy/ansible_ansible.legacy.dnf5_payload.zip/ansible/modules/dnf5.py", line 773, in main
  File "/tmp/ansible_ansible.legacy.dnf5_payload_0aw0s5cy/ansible_ansible.legacy.dnf5_payload.zip/ansible/modules/dnf5.py", line 735, in run
  File "/usr/lib64/python3.13/site-packages/libdnf5/base.py", line 867, in download
    return _base.Transaction_download(self)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
libdnf5.exception.RepoPackageDownloadErrorNested: Failed to download packages

That doesn't give any details about the reason of the failure, we should try to figure out if we can enable some debug logging.

[TomasTomecek]

Try to use a simple dirty solution here. Create followup cards for a proper longterm fix.

[majamassarini]

I wasn't able to replicate this behaviour. Putting it back to the backlog.