Docker nginx 多域名反向代理

注意容器中是一个被隔离的空间，可以理解为一个独立的服务器，所以在做反向代理的时候，nginx配置不能使用localhost，可以使用link方式去访问其他容器

nginxa:
    container_name: nginxa
    image: registry.cn-shenzhen.aliyuncs.com/beni/nginx:latest
    volumes:
        - C:/data/nginxa/conf.d:/etc/nginx/conf.d
        - C:/data/nginxa/www:/usr/share/nginx/html
 
nginxb:
    container_name: nginxb
    image: registry.cn-shenzhen.aliyuncs.com/beni/nginx:latest
    volumes:
        - C:/data/nginxb/conf.d:/etc/nginx/conf.d
        - C:/data/nginxb/www:/usr/share/nginx/html
 
nginxc:
    container_name: nginxc
    image: registry.cn-shenzhen.aliyuncs.com/beni/nginx:latest
    ports:
        - 80:80
    volumes:
        - C:/data/nginxc/conf.d:/etc/nginx/conf.d
    links:
        - nginxa:nginxa
        - nginxb:nginxb

配置

server {
    listen       80;
    server_name  a.pytask.com;
 
    location / {
        proxy_set_header Host $host; 
        proxy_set_header X-Real-IP $remote_addr; 
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
        proxy_pass http://nginxa:80/;
    }
}
server {
    listen       80;
    server_name  b.pytask.com;
 
    location / {
        proxy_set_header   Host    $host; 
        proxy_set_header   X-Real-IP   $remote_addr; 
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for; 
        proxy_pass http://nginxb:80/;
    }
 
}

a.pytask.com访问应用a
b.pytask.com访问应用b
其中a和b两个容器可以不做端口映射，因为c是用过link方式访问a和b
c做的是反向代理，开放80端口给外部访问