docker nginx容器 端口配置

今天在服务器上部署了一个docker的nginx容器，宿主机和容器的端口映射是8181:80
nginx配置文件如下

server {
    listen 8181;

    server_name docker-test.mydocker.com;
    set $project_path user-api/public;
    set $docker_root /www;

    root $docker_root/$project_path;
    index index.php;
    try_files $uri $uri/ /index.php?$query_string;

    location ~ \.php$ {
        fastcgi_pass  php72:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $docker_root/$project_path/$fastcgi_script_name;
        include    fastcgi_params;
        if ($http_origin) {
            add_header Access-Control-Allow-Origin $http_origin always;
            add_header Access-Control-Allow-Credentials true always;
            add_header Access-Control-Allow-Headers "Authorization, X-XSRF-TOKEN, Content-Type, Origin, Xmen-Token, Giver-Token" always;
            add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE" always;
        }
    }
}

访问后一直报错

curl: (56) Recv failure: Connection reset by peer

一顿研究后发现，nginx配置文件 listen应该是80，而不是8181。外部访问地址是http://docker-test.mydocker.com:8181，但是nginx配置文件是在容器内使用，应该使用容器的端口80，所以把上面的配置改为容器的端口即可

server {
    listen 80;

    server_name docker-test.mydocker.com;
    set $project_path user-api/public;
    set $docker_root /www;

    root $docker_root/$project_path;
    index index.php;
    try_files $uri $uri/ /index.php?$query_string;

    location ~ \.php$ {
        fastcgi_pass  php72:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $docker_root/$project_path/$fastcgi_script_name;
        include    fastcgi_params;
        if ($http_origin) {
            add_header Access-Control-Allow-Origin $http_origin always;
            add_header Access-Control-Allow-Credentials true always;
            add_header Access-Control-Allow-Headers "Authorization, X-XSRF-TOKEN, Content-Type, Origin, Xmen-Token, Giver-Token" always;
            add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE" always;
        }
    }
}