Update CI installation steps

.gitlab-ci.yml

@@ -6,6 +6,7 @@ stages:
 
 variables:
   UV_CACHE_DIR: "$CI_PROJECT_DIR/.cache/uv"
+  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
   DJANGO_SETTINGS_MODULE: "newsreader.conf.gitlab"
   POSTGRES_HOST: "$POSTGRES_HOST"
   POSTGRES_DB: "$POSTGRES_NAME"
@@ -16,7 +17,7 @@ variables:
 cache:
   key: "$CI_COMMIT_REF_SLUG"
   paths:
-    - env/
+    - .cache/pip
     - .cache/uv
     - node_modules/
 

gitlab-ci/lint.yml

@@ -2,7 +2,8 @@ python-linting:
   stage: lint
   image: python:3.11
   before_script:
-    - uv pip install --requirement requirements/ci.txt
+    - pip install --system uv
+    - uv pip install --system --requirement requirements/ci.txt
   script:
     - isort --check-only src/
     - black --line-length 88 --check src/

gitlab-ci/test.yml

@@ -6,7 +6,8 @@ python-tests:
     - memcached:1.5.22
   image: python:3.11
   before_script:
-    - uv pip install --requirement requirements/ci.txt
+    - pip install --system uv
+    - uv pip install --system --requirement requirements/ci.txt
   script:
     - coverage run ./src/manage.py test newsreader