proxy.conf

upstream target_service {
  server {{TARGET_SERVICE}};
}

upstream cert_service {
  server {{CERT_SERVICE}};
}

server {
  server_name _;
  listen 80;

  location / {
    return 301 https://$host$request_uri;
  }

  location /.well-known/acme-challenge {
    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;
    proxy_pass         http://cert_service;
    proxy_read_timeout 90;
  }
}

server {
  server_name _;
  listen 443;

  ssl on;
  ssl_certificate /etc/secrets/proxycert;
  ssl_certificate_key /etc/secrets/proxykey;
  ssl_dhparam /etc/secrets/dhparam;

  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_ciphers ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-RSA-RC4-SHA:AES128-GCM-SHA256:HIGH:!RC4:!MD5:!aNULL:!EDH:!CAMELLIA;
  ssl_prefer_server_ciphers on;

  ssl_session_cache shared:SSL:10m;
  ssl_session_timeout 10m;

  ssl_stapling on;
  ssl_stapling_verify on;
  resolver 8.8.8.8 8.8.4.4 valid=300s;
  resolver_timeout 5s;

  add_header Strict-Transport-Security max-age=15638400;
  add_header X-Frame-Options DENY;
  add_header X-Content-Type-Options nosniff;

  location / {
    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;
    proxy_set_header   X-Forwarded-Host $http_host;
    proxy_pass         http://target_service;
    proxy_read_timeout 90;
    proxy_redirect     http:// https://;
    proxy_http_version 1.1;
  }
}