Nginx Reverse Proxy | Auto HTTPS with Let's Encrypt | Multiple Docker Containers

Reference

Reverse Proxy

~/proxy/docker-compose.yml

version: "3.7"
services:
  reverse-proxy:
    image: nginxproxy/nginx-proxy:latest
    container_name: reverse-proxy
    volumes:
      - ./conf.d:/etc/nginx/conf.d
      - certs:/etc/nginx/certs
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - /var/run/docker.sock:/tmp/docker.sock:ro
    restart: always
    networks:
      - net
    ports:
      - 80:80
      - 443:443

  letsencrypt:
    image: nginxproxy/acme-companion:latest
    container_name: letsencrypt-helper
    volumes:
      - certs:/etc/nginx/certs
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - acme:/etc/acme.sh
      - /var/run/docker.sock:/var/run/docker.sock:ro
    environment:
      NGINX_PROXY_CONTAINER: reverse-proxy
      DEFAULT_EMAIL: email@certrenewal.com
    restart: always
    depends_on:
      - reverse-proxy
    networks:
      - net

volumes:
  certs:
  vhost:
  html:
  acme:

networks:
  net:
    external: true

Container

~/appA/docker-compose.yml

version: "3.7"
services:
  ghost:
    image: ghost:5.75.0
    restart: always
    container_name: named-container
    environment:
      database__client: mysql
      database__connection__host: mysqlpath
      database__connection__port: 3306
      database__connection__user: ghostuser
      database__connection__password: 'password'
      database__connection__database: ghostdb
      url: https://yours.domain.com
      VIRTUAL_HOST: yours.domain.com
      LETSENCRYPT_HOST: yours.domain.com
    volumes:
      - ./ghost/content:/var/lib/ghost/content
    networks:
      - net

networks:
  net:
    external: true