I'm starting to look into devcontainers with VSCode and I am looking for a container configuration (Dockerfile/devcontainer.json) that sets up a good Python development environment with some recommended extensions and settings (e.g. paths, venv, fromatting, linting) for beginners (its been some time since I was doing Python development), but that's not over-complicated.

I have the following resources that I have pieced together as a starting point and could use some input and feedback on these (I'm not sure if everything makes sense) and what to improve for a good development experience. Particularly I'm looking for input on the VSCode extensions / settings.

docker-compose.dev.yaml

version: '3.9'

networks: app-dev-network: 
    driver: bridge 
    name: app-dev-network

services:

backend:

    image: backend-dev-image
    container_name: backend-dev-container
    build:
        context: ./
        dockerfile: ./Dockerfile.dev
    volumes:
        - ..:/workspace:cache
    networks:
        - app-dev-network
    ports:
        - target: 5000 
          published: 5000

    command: sleep infinity

Dockerfile.dev

ARG VARIANT="3.11-bookworm" 
FROM mcr.microsoft.com/devcontainers/python:${VARIANT}

RUN apt-get update && \    
apt-get upgrade --yes --no-install-recommends && \    
apt-get clean

ENV PYTHONUNBUFFERED=1

devcontainer.json

{
    "name": "Backend",
    "dockerComposeFile": [
        "./docker-compose.dev.yaml"
    ],
    "service": "backend",
    "workspaceFolder": "/workspace",

    "customizations": {  
        "vscode": {  
            "extensions": [  
                "ms-python.python",  
            ],  
            "settings": {  
                "python.pythonPath": "${workspaceFolder}/.venv/bin/python",             
                "python.defaultInterpreterPath": "${workspaceFolder}/.venv/bin/python",  
            }  
        }  
    },

    "postCreateCommand": "pip3 install --user -r requirements.txt"
}