🎨 Factorize backend linters steps

backend/.woodpecker/.lint.yaml

@@ -3,26 +3,24 @@ when:
     branch:
       exclude: [master, release/*]
 
+image: python:3.12-alpine
+
 steps:
-  - name: ruff
-    image: python:3.12-alpine
-    failure: ignore
-    secrets: ["reviewdog_gitea_api_token", "gitea_address"]
-    commands: |
-      cd backend
+  - name: prepare
+    command: |
       wget -O - -q https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh | sh -s latest
       pip install poetry
+      cd backend
       poetry install --only=linters --no-root
-      poetry run ruff --output-format sarif . | ./bin/reviewdog -f sarif -reporter gitea-pr-review -log-level debug
 
-  - name: mypy
-    image: python:3.12-alpine
+  - name: ruff
     failure: ignore
     secrets: ["reviewdog_gitea_api_token", "gitea_address"]
     commands: |
-      cd backend
-      wget -O - -q https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh | sh -s latest
-      touch .reviewdog.yml
-      pip install poetry 2>&1 > /dev/null
-      poetry install --only=linters --no-root 2>&1 > /dev/null
-      poetry run mypy --no-incremental . | ./bin/reviewdog -f mypy -reporter gitea-pr-review -filter-mode nofilter -log-level debug 2>&1
+      poetry run ruff --output-format sarif . | ./bin/reviewdog -f sarif -reporter gitea-pr-review -filter-mode nofilter
+
+  - name: mypy
+    failure: ignore
+    secrets: ["reviewdog_gitea_api_token", "gitea_address"]
+    commands: |
+      poetry run mypy --no-incremental . | ./bin/reviewdog -f mypy -reporter gitea-pr-review -filter-mode nofilter