Generate a static files bundle in CI

.gitlab-ci.yml

@@ -69,3 +69,18 @@ backend-openapi:
   artifacts:
     paths:
       - output/
+
+backend-static:
+  stage: build
+
+  script:
+    - mkdir -p static
+    - pip install -e .
+    - STATIC_ROOT=$(pwd)/static arkindex/manage.py collectstatic
+
+  variables:
+    PONOS_DATA_DIR: /tmp
+
+  artifacts:
+    paths:
+      - static