Monorepo with golang back-end, front-end and Caddy server

Caddyfile

yourhost.dev:80 yourhost.dev:443 {
  tls self_signed

  proxy /api backend:8080 {
    without /api
    websocket
  }

  log stdout
  errors stderr

  gzip {
    level 9
  }
}

docker-comose.yml

version: '3'

services:
  backend:
    build: ./src/backend
    volumes:
      - ./src/backend:/go/src/github.com/some/path
    command: sh -c "go build -mod vendor && ./backend"
    ports:
      - "8080:8080"
    restart: always
    depends_on:
      - "backend"

  backenddb:
    image: postgres:11.3
    ports:
      - "5432:5432"
    volumes:
      - ./src/backend/db:/var/lib/postgresql/data
      - ./src/backend/sql:/docker-entrypoint-initdb.d/
    restart: always

  frontend:
    build: ./src/frontend
    volumes:
      - ./src/frontend/public:/srv
      - ./src/frontend/Caddyfile:/etc/Caddyfile
    ports:
      - "80:80"
      - "443:443"
    restart: always
    depends_on:
      - "backend"

Dockerfile

FROM abiosoft/caddy

COPY public /srv
COPY Caddyfile /etc/

# Expose http and https ports.
EXPOSE 80
EXPOSE 443