使用.htaccess将所有非www重定向到www和https的www(Redirect all non-www to www for both http and https with .htaccess)

 每个docker-compose.yml都会创建自己的子网。 所以你的3个容器看不到对方。 由其他docker-compose创建的网络据说是外部的，因此您必须声明它们。 您可以使用docker network ls查看这些网络。 
 
 在docker-compose.yml文件中声明外部网络中的外部网络后，您必须定义nginx服务应使用的网络。 您应该保留default网络。 
 
 通常，docker-compose网络的默认名称是<current_dir>_default 。 因此，假设您当前的目录名为yourproject1 ，网络名称将是yourproject1_default 。 
 
 然后您将能够使用external_links访问您的wordpress容器（优于IP地址的IP地址） 
 
 在这里我会为nginx的docker-compose.yml文件做些什么来让他能够看到wordpress容器： 
 
version: '2'

services:
  nginx:
    ...
    external_links:
      - your_project1_wordpress1_1:wordpress1
      - your_other_project2_wordpress2_1:wordpress2
    networks:
      - default
      - your_project1_default
      - your_other_project2_defaul



networks:
  your_project1_default:
    external: true
  your_other_project2_default:
    external: true

Each docker-compose.yml will create it's own subnet. So your 3 containers can't see each other. Networks created by other docker-compose are said to be external so you have to declare them as such. You can see these networks using docker network ls. 
 
After declaring the external networks in your external networks in your docker-compose.yml file, you will have to define what networks should be using by the nginx service. You should keep the default network.
 
Usually the default name for your docker-compose network is <current_dir>_default. So suppose your current directory is called yourproject1 the network name is going to be yourproject1_default.
 
And then you will be able to access your wordpress containers using external_links (better than ip addresses IMO)
 
Here what I would do for nginx's docker-compose.yml file to make him able to see wordpress containers :
 
version: '2'

services:
  nginx:
    ...
    external_links:
      - your_project1_wordpress1_1:wordpress1
      - your_other_project2_wordpress2_1:wordpress2
    networks:
      - default
      - your_project1_default
      - your_other_project2_defaul



networks:
  your_project1_default:
    external: true
  your_other_project2_default:
    external: true