feat: added tests base image (Python 3.8)

.gitlab-ci.yml

+
+build_python-logilab:
+  image:
+    name: gcr.io/kaniko-project/executor:debug
+    entrypoint: [""]
+  script:
+    - echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json
+    - /kaniko/executor
+      --context $CI_PROJECT_DIR/library/python-logilab
+      --dockerfile $CI_PROJECT_DIR/library/python-logilab/Dockerfile
+      --destination $CI_REGISTRY_IMAGE/python-logilab
+      --build-arg python-version=3.8

library/python-logilab/Dockerfile

+ARG version="latest"
+FROM python:"${version}"
+RUN pip install tox