feat: Move default steps into container

.gitea/workflows/server-deploy.yml

@@ -77,7 +77,7 @@ jobs:
                   # generated pb is committed under server/, but a proto change
                   # that someone regenerates in the same push should not depend
                   # on that ordering.
-                  flag server    '^(server/|shared/|proto/|go\.work)'
+                  flag server    '^(server/|shared/|proto/|default_steps/|go\.work)'
                   flag sitesvc   '^(sitesvc/|shared/|go\.work)'
                   flag admin     '^(admin/|shared/|go\.work)'