server {
  listen 80;
  server_name _;
  root /usr/share/nginx/html;
  index index.html;
  # Bunny uploads pass through this reverse proxy. Keep the same 5 GB ceiling
  # as the API default and stream bodies instead of buffering them on disk.
  client_max_body_size 5g;

  # Docker Swarm may start this container before the API service receives a DNS
  # record. Resolving through Docker DNS at request time keeps Nginx alive while
  # the API starts or is replaced during a rolling deployment.
  resolver 127.0.0.11 ipv6=off valid=10s;
  resolver_timeout 5s;
  set $api_upstream api;

  location /api/ {
    proxy_pass http://$api_upstream:3001;
    proxy_http_version 1.1;
    proxy_request_buffering off;
    proxy_buffering off;
    proxy_read_timeout 3600s;
    proxy_send_timeout 3600s;
    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_set_header X-Forwarded-Proto $scheme;
  }

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