Merge branch 'ci-registry-login' into 'main'

ci: Push to integrated registry by default

See merge request cgwalters-playground/bootc-demo-base-images!3

.gitlab-ci.yml

@@ -6,8 +6,14 @@ stages:
   - build
 
 build:
+  variables:
+    COMPOSE_INITIALIZE: ""
+    FORCE: ""
   stage: build
+  before_script:
+    # Log into the registry
+    - echo "$CI_REGISTRY_PASSWORD" | podman login -u "$CI_REGISTRY_USER" --password-stdin $CI_REGISTRY
   script:
     - rpm-ostree install distribution-gpg-keys
-    - rpm-ostree compose image -i --format=ociarchive fedora.yaml fedora.oci-archive
+    - rpm-ostree compose image ${COMPOSE_INITIALIZE:+--initialize} ${FORCE:+--force-nocache} --format=registry fedora.yaml ${CI_REGISTRY_IMAGE}/fedora