[cicd] Run tests with multiples Python/Django combinations

.github/workflows/test.yml

@@ -11,13 +11,20 @@ jobs:
   run_tests:
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        python: ["3.10", "3.11", "3.12"]
+        django: ["4.2", "5.0", "5.1"]
+
+    name: Tests - python ${{ matrix.python }} × django ${{ matrix.django }}
+
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Build
         run: |
-          docker build -f dev/docker/Dockerfile -t cotton-test-app dev/example_project
+          docker build -f dev/docker/Dockerfile --build-arg PYTHON_VERSION=${{ matrix.python }} --build-arg DJANGO_VERSION=${{ matrix.django }} -t cotton-test-app dev/example_project
 
       - name: Start Container
         run: |
@@ -27,4 +34,4 @@ jobs:
         run: docker exec -t cotton-dev-app python manage.py test
 
       - name: Stop and Remove Services
-        run: docker compose -f dev/docker/docker-compose.yaml down
+        run: docker compose -f dev/docker/docker-compose.yaml down

dev/docker/Dockerfile

@@ -1,6 +1,8 @@
+ARG PYTHON_VERSION=3.12
 # Use an official Python runtime as a base image
-FROM python:3.12-slim-bookworm
+FROM python:${PYTHON_VERSION}-slim-bookworm
 
+ARG DJANGO_VERSION=4.2
 # Setup env
 ENV PIP_DISABLE_PIP_VERSION_CHECK=on \
     PIP_NO_CACHE_DIR=off \
@@ -20,6 +22,7 @@ COPY . /app/
 
 # Install project dependencies
 RUN poetry config virtualenvs.create false \
-    && poetry install
+    && poetry install \
+    && pip install -U "django==$DJANGO_VERSION.*"
 
-CMD [ "python", "manage.py", "runserver", "0.0.0.0:8000" ]
+CMD [ "python", "manage.py", "runserver", "0.0.0.0:8000" ]

dev/example_project/pyproject.toml

@@ -9,5 +9,5 @@ description = "Development and test app for the django package."
 authors = ["Will Abbott <willabb83@gmail.com>"]
 
 [tool.poetry.dependencies]
-python = "^3.10"
-Django = "^5.1"
+python = ">=3.10"
+Django = "^5.1"