Demonstrate placing mitmproxy in front of a service in docker compose

compose.mitmproxy.yaml

services:
  proxy:
    image: mitmproxy/mitmproxy:11.0
    tty: true
    ports:
      - "80:8080"   # proxy
      - "8081:8081" # web ui 
    command: mitmweb --mode reverse:http://backend:3000/ --web-host 0.0.0.0 --set keep_host_header --no-web-open-browser 
    depends_on:
      - backend

  backend:
    image: hashicorp/http-echo:1.0
    command: ['-listen', ':3000', '-text', 'Hello from ${APP_NAME:-backend}!']

# compose up
# curl localhost
# curl localhost/foo
# open http://localhost:8081/ in your browser to see the requests/responses from the ^^^ curl commands.