split build from lint, try 3.10 as build arg

.github/workflows/test-only.yml

@@ -4,8 +4,21 @@ name: ChangeDetection.io App Test
 on: [push, pull_request]
 
 jobs:
+  lint-code:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Lint with flake8
+        run: |
+          pip3 install flake8
+          # stop the build if there are Python syntax errors or undefined names
+          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
   test-application:
     runs-on: ubuntu-latest
+    needs: lint-code
     steps:
       - uses: actions/checkout@v4
 
@@ -15,14 +28,6 @@ jobs:
         with:
           python-version: '3.11'
 
-      - name: Lint with flake8
-        run: |
-          pip3 install flake8
-          # stop the build if there are Python syntax errors or undefined names
-          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-
       - name: Spin up ancillary testable services
         run: |
           
@@ -38,7 +43,7 @@ jobs:
       - name: Build changedetection.io container for testing
         run: |         
           # Build a changedetection.io container and start testing inside
-          docker build --build-arg LOGGER_LEVEL=TRACE -t test-changedetectionio .
+          docker build --build-arg PYTHON_VERSION=3.10 --build-arg LOGGER_LEVEL=TRACE -t test-changedetectionio .
           # Debug info
           docker run test-changedetectionio  bash -c 'pip list'