server {
  listen 3000;
  server_name _;
  root /usr/share/nginx/html;
  index index.html;

  location = /api/health {
    default_type text/plain;
    add_header Content-Type text/plain;
    return 200 "ok";
  }

  # A 站无公网域名：浏览器只访问 B 站，由 B 反代到集群内 project57
  location /embed/ {
    proxy_pass ${A_UPSTREAM}/embed/;
    proxy_http_version 1.1;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  location /images/ {
    proxy_pass ${A_UPSTREAM}/images/;
    proxy_http_version 1.1;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  location = /api/contact {
    proxy_pass ${A_UPSTREAM}/api/contact;
    proxy_http_version 1.1;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  location / {
    try_files $uri $uri/ /index.html;
  }
}