Nginx conf for a dockerize ng2 app and setup proxy

nginx.conf

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log /var/log/nginx/access.log  main;

    sendfile           on;
    keepalive_timeout  65;
    gzip               on;
    gzip_disable       "msie6";
    gzip_proxied       any;
    gzip_comp_level    6;
    gzip_types         text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    # gzip_vary on;
    # gzip_buffers 16 8k;
    # gzip_http_version 1.1;

    server {
        listen       80;
        server_name  localhost;
        location / {
                root   /usr/share/nginx/html;
                index  index.html index.htm;
                try_files $uri$args $uri$args/ /index.html;
        }

        location /api/ {
            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://gateway:9998;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}