Lint on a prior CI job

Signed-off-by: Michel Hidalgo <[email protected]>

.github/workflows/ci.yml

@@ -17,9 +17,19 @@ defaults:
     shell: bash
 
 jobs:
+  lint:
+    name: Lint ros_utilities packages
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - uses: actions/setup-python@v3
+      - name: Lint sources
+        uses: pre-commit/[email protected]
   prepare_container:
-    name: Prepare Humble container for CI
+    name: Prepare Humble container for tests
     runs-on: ubuntu-latest
+    needs: lint
     permissions:
       contents: read
       packages: write
@@ -63,9 +73,6 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
-      - name: Lint sources
-        uses: pre-commit/[email protected]
       - name: Build and run tests
         run: |
           source /opt/ros/humble/setup.bash