Merge branch '16-use-ci_api_v4_url-var-in-build-pipeline' into 'main'

Resolve "Use CI_API_V4_URL var in build pipeline"

Closes #16

See merge request !15

gitlab-ci/build-and-publish-package.yml

@@ -5,6 +5,6 @@ build-and-publish-package:
   script:
     - cd ${PROJECT_PATH:=.}
     - poetry build
-    - poetry config repositories.gitlab "https://code.europa.eu/api/v4/projects/$CI_PROJECT_ID/packages/pypi"
+    - poetry config repositories.gitlab "${CI_API_V4_URL}/projects/$CI_PROJECT_ID/packages/pypi"
     - poetry config http-basic.gitlab gitlab-ci-token "$CI_JOB_TOKEN"
     - poetry publish --repository gitlab