Host multiple websites with SSL, Docker and Nginx

Using Docker to deploy multiple Nginx websites with SSL enabled

Today in this post I will guide on how to deploy multiple websites by using Docker, with SSL enabled.


Let's start!


1. Make a directory named `dockerize`, and go into the directory.

 mkdir ~/dockerize; cd ~/dockerize

2.  Now create a docker network named `nginx-proxy-network`.

 docker network create nginx-proxy-network

3. Inside `dockerize` directory, create a file named `docker-compose.yml`. This file is to automate our deployment.

 touch ~/dockerize/docker-compose.yml

4. Now edit `docker-compose.yml` with your favorite text editor. Paste the following text.

version: '3'

services:
  nginx:
    image: nginx:1.17.5
    container_name: nginx-proxy
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - conf:/etc/nginx/conf.d
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - certs:/etc/nginx/certs
    labels:
      - "com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy=true"

  dockergen:
    image: jwilder/docker-gen:0.7.3
    container_name: nginx-proxy-gen
    depends_on:
      - nginx
    command: -notify-sighup nginx-proxy -watch -wait 5s:30s /etc/docker-gen/templates/nginx.tmpl /etc/nginx/conf.d/default.conf
    volumes:
      - conf:/etc/nginx/conf.d
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - certs:/etc/nginx/certs
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - ./nginx.tmpl:/etc/docker-gen/templates/nginx.tmpl:ro

  letsencrypt:
    image: jrcs/letsencrypt-nginx-proxy-companion:v1.12
    container_name: nginx-proxy-le
    depends_on:
      - nginx
      - dockergen
    environment:
      NGINX_PROXY_CONTAINER: nginx-proxy
      NGINX_DOCKER_GEN_CONTAINER: nginx-proxy-gen
    volumes:
      - conf:/etc/nginx/conf.d
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - certs:/etc/nginx/certs
      - /var/run/docker.sock:/var/run/docker.sock:ro

volumes:
  conf:
  vhost:
  html:
  certs:

# Do not forget to 'docker network create nginx-proxy' before launch, and to add '--network nginx-proxy' to proxied containers. 

networks:
  default:
    external:
      name: nginx-proxy-network

5. Execute following to download nginx.tmpl

 curl https://raw.githubusercontent.com/jwilder/nginx-proxy/master/nginx.tmpl > ~/dockerize/nginx.tmpl

6. Now you can deploy the Nginx proxy.

 docker-compose up -d  

7. Run the following command to create directories, and create index files for each site.

 mkdir -p webpage/mainpage/html; mkdir -p webpage/another_page/html

 echo 'hello from mainpage' > mainpage/html/index.html

 echo 'hello from another_page' > another/html/index.html

8. Change directory into `webpage`.

 cd webpage

9. Create a `docker-compose` configuration file, to deploy virtual hosts automatically. In this part, you will need to change VIRTUAL_HOST, LETSENCRYPT_HOST, and LETSENCRYPT_EMAIL, based on your configuration.

version: '3'

services:
  mainpage:
    image: nginx:1.17.5
    expose:
      - 80
    environment:
      VIRTUAL_HOST: example.com
      LETSENCRYPT_HOST: example.com
      LETSENCRYPT_EMAIL: contact@example.com
    volumes:
      - ./mainpage/html:/usr/share/nginx/html

  another_page:
    image: nginx:1.17.5
    expose:
      - 80
    environment:
      VIRTUAL_HOST: another-page.example.com
      LETSENCRYPT_HOST: another-page.example.com
      LETSENCRYPT_EMAIL: contact@another-page.example.com
    volumes:
      - ./another_page/html:/usr/share/nginx/html

networks:
    default:
        external:
            name: nginx-proxy-network

10. Now you can deploy your website using docker-compose.

 docker-compose up -d

source: https://blog.ssdnodes.com/blog/host-multiple-ssl-websites-docker-nginx/