Upload container to registry

.gitlab-ci.yml

@@ -45,11 +45,15 @@ container:
   services:
     - docker:dind
   variables:
+    IMAGE_TAG: $CI_REGISTRY_IMAGE:latest
     DOCKER_BUILDKIT: 1
   dependencies: []
   stage: test
+  before_script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
   script:
-    - docker build -t website --target production .
+    - docker build -t website --target production -t $IMAGE_TAG .
+    - docker push $IMAGE_TAG
 
 .python_test_template: &python_test_template
   image: python:3.10