Updated CI with anchors

.gitlab-ci.yml

@@ -1,17 +1,24 @@
 stages:
 - quality assurance
 
+.init_venv: &init_venv
+  - python -m venv .venv
+  - source .venv/bin/activate
+  - python --version
+  - echo "venv '$VIRTUAL_ENV'"
+
+.install_requirements: &install_requirements
+  - pip install -r requirements.txt --disable-pip-version-check -q
+  - python -m pip list --format=columns --disable-pip-version-check
+
 backend-pylint:
   stage: quality assurance
   image: python:3.11.4-buster
   before_script:
   - cd backend
-  - python -m venv .venv
-  - source .venv/bin/activate
-  - echo "venv '$VIRTUAL_ENV'"
-  - pip install -r requirements.txt --disable-pip-version-check -q
+  - *init_venv
+  - *install_requirements
   - pip install pylint --disable-pip-version-check -q
-  - python --version
-  - python -m pip list --format=columns --disable-pip-version-check
+  - pylint --version
   script:
-  - pylint src/* --fail-under 9
+  - pylint src/* --fail-under 9