nginx.conf

user  nginx;
worker_processes  auto;

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

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/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;
    #tcp_nopush     on;

    keepalive_timeout  65;

    gzip  on;

  server {
    auth_basic           "Restricted";
    auth_basic_user_file /basic_auth_file;

    listen       80;
    # server_name  domain2.com www.domain2.com;
    # access_log   logs/domain2.access.log  main;

    location /api/ {
      proxy_pass      http://backend:3200/;
    }

    rewrite ^/$ /index.html;
    # serve static files
    location ~ ^/assets/|index.html  {
      root    /static_files;
      expires 30d;
    }
  }

}