[tracker-oci-images] (10 commits) Non-fast-forward update to branch sam/podman

[Sam Thursfield <sthursfield src gnome org>]

The branch 'sam/podman' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  51faf01... Use Podman instead of Docker to build images
  e634a46... Enable shell tracing during container build
  11a9e70... Avoid podman trying to talk to systemd when running in a co
  aae0685... Use correct credentials to push the image
  1174e8b... Only push on master

Commits added to the branch:

  e0ac961... Add Ubuntu image for CI (*)
  b4353ac... Set 'interruptible' flag on build pipelines (*)
  09e675e... Merge branch 'sam/interruptible' into 'master' (*)
  7cf46f3... Merge branch 'sam/ubuntu' into 'master' (*)
  a0f355b... Remove unnecessary `apt remove` command (*)
  f37cc27... Use Podman instead of Docker to build images
  9533e06... Enable shell tracing during container build
  62b83b1... Avoid podman trying to talk to systemd when running in a co
  c1c2d50... Use correct credentials to push the image
  240e6d9... Only push on master

(*) This commit already existed in another branch; no separate mail sent