Use podman for docker

1 job for master in 13 seconds (queued for 4 seconds)
Status Job ID Name Coverage
failed #342485
podman ppc64le-linux


Name Stage Failure
build-ppc64le-linux-opensuse151 Build
* "localhost/ppc64le/leap:15.1": Error initializing source docker://localhost/ppc64le/leap:15.1: error pinging docker registry localhost: Get https://localhost/v2/: dial tcp connect: connection refused
* "": Error initializing source docker:// Error reading manifest 15.1 in name unknown
* "": Error initializing source docker://ppc64le/leap:15.1: Error reading manifest 15.1 in errors:
denied: requested access to the resource is denied
unauthorized: authentication required

Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit status 1