Use check_output instead of run

pc_backup/podman.py

@@ -86,4 +86,5 @@ class Podman:
     def _call(cls, args: list, **kwargs):
         args = ["podman"] + args
         print(f"Executing `{" ".join(args)}`")
-        subprocess.run(args, **kwargs)
+        out = subprocess.check_output(args, **kwargs)
+        print(out.decode())