Dockerize many PHP Sites with HTTPS

docker-compose.yml

services:
  nginx:
    image: nginx:alpine
    container_name: web
    depends_on:
      - php
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
      - ./nginx-common.conf:/etc/nginx/nginx-common.conf:ro
      - ./certs:/etc/nginx/certs:ro
      - ./sites:/var/www/html

  php:
    image: php
    container_name: app
    working_dir: /var/www/html
    ports:
      - "8080:80"
      - "8443:443"
    volumes:
      - ./sites:/var/www/html

  composer:
    image: composer
    container_name: composer
    working_dir: /var/www/html
    volumes:
      - ./sites:/var/www/html
      - ./.composer:/tmp/.composer
    environment:
      COMPOSER_CACHE_DIR: /tmp/.composer

nginx-common.conf

listen 80;
listen 443 ssl;

ssl_certificate     /etc/nginx/certs/cert.pem;
ssl_certificate_key /etc/nginx/certs/key.pem;

if ($scheme = http) {
    return 301 https://$host$request_uri;
}

index index.php index.html index.htm;

location / {
    try_files $uri $uri/ /index.php?$query_string;
}

location ~ \.php$ {
    fastcgi_pass   php:9000;
    fastcgi_index  index.php;
    include        fastcgi_params;
    fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
}

nginx.conf

server {
    server_name site1.localhost *.site1.localhost;
    root /var/www/html/site1/public;
    include /etc/nginx/nginx-common.conf;
}

server {
    server_name site2.localhost *.site2.localhost;
    root /var/www/html/site2/public;
    include /etc/nginx/nginx-common.conf;
}