This is what I use

  mealie-frontend:
    image: hkotel/mealie:frontend-nightly
    container_name: mealie-frontend
    environment:
      - API_URL=http://mealie-api:9000
    restart: always
    networks:
      - caddy
      - mealie-api
    volumes:
      - /home/docker/configs/mealie:/app/data
  mealie-api:
    image: hkotel/mealie:api-nightly
    container_name: mealie-api
    networks:
      - mealie-api
    volumes:
      - /home/docker/configs/mealie:/app/data
    environment:
    # Set Backend ENV Variables Here
      - ALLOW_SIGNUP=false
      - PUID=1000
      - PGID=1000
      - TZ=America/Anchorage
      - MAX_WORKERS=1
      - WEB_CONCURRENCY=1
      - BASE_URL=https://mealie.tom42.pw
    restart: always