split build from lint, try 3.10 as build arg

.github/workflows/test-only.yml

@@ -4,17 +4,10 @@ name: ChangeDetection.io App Test
 on: [push, pull_request]
 
 jobs:
-  test-application:
+  lint-code:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-
-      # Mainly just for link/flake8
-      - name: Set up Python 3.11
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-
       - name: Lint with flake8
         run: |
           pip3 install flake8
@@ -23,6 +16,18 @@ jobs:
           # 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
+
+      # Mainly just for link/flake8
+      - name: Set up Python 3.11
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
       - 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'
 

Dockerfile

@@ -2,7 +2,10 @@
 
 # @NOTE! I would love to move to 3.11 but it breaks the async handler in changedetectionio/content_fetchers/puppeteer.py
 #        If you know how to fix it, please do! and test it for both 3.10 and 3.11
-FROM python:3.10-slim-bookworm as builder
+
+ARG PYTHON_VERSION=3.10
+
+FROM python:${PYTHON_VERSION}-slim-bookworm as builder
 
 # See `cryptography` pin comment in requirements.txt
 ARG CRYPTOGRAPHY_DONT_BUILD_RUST=1