CI: Add editable installation test.

.gitlab-ci.yml

@@ -12,3 +12,12 @@ test:
     - twine check dist/*.whl
     - python3 -m pip install dist/*.whl
     - sampleproject
+
+test editable package:
+  image: registry.shore.co.il/ci-images:python3
+  script:
+    - cd "$(mktemp -d)"
+    - python3 -m venv .
+    - . ./bin/activate
+    - pip install -e "$CI_PROJECT_DIR"
+    - sampleproject