chore: Upgrade to python3.12 and debian 12 in dockerfile

.github/workflows/ci.yaml

@@ -0,0 +1,30 @@
+name: ci
+
+on:
+  push:
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v4
+      with:
+        python-version: '3.12' 
+    - name: Run pre-commit tests
+      uses: pre-commit/action@v3.0.0
+  build-test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set .env from .env.example
+      run: mv .env.example .env
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+    - name: Build image for amd64 and arm64
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        platforms: linux/amd64,linux/arm64

Dockerfile

@@ -1,5 +1,6 @@
-# Use an official Python runtime based on Debian 10 "buster" as a parent image.
-FROM python:3.8.1-slim-buster
+# Use an official Python runtime based on Debian 12 "bookworm" as a parent image.
+# Supported python3 versions: https://docs.wagtail.org/en/stable/releases/upgrading.html#compatible-django-python-versions
+FROM python:3.12-slim-bookworm
 
 # Add user that will be used in the container.
 RUN useradd wagtail
@@ -18,7 +19,6 @@ ENV PYTHONUNBUFFERED=1 \
 RUN apt-get update --yes --quiet && apt-get install --yes --quiet --no-install-recommends \
     build-essential \
     libpq-dev \
-    libmariadbclient-dev \
     libjpeg62-turbo-dev \
     zlib1g-dev \
     libwebp-dev \

docker-compose.yml

@@ -3,11 +3,13 @@ version: '3'
 services:
   db:
     image: postgres:16-alpine
-    ports:
-      - "5432:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data/
       - ./scripts/dbinit/:/docker-entrypoint-initdb.d/
+    ports:
+      # Allows db access from local machine, feel free
+      # to remove locally if it causes conflicts
+      - 5432:5432
     env_file: .env
 
   web: