asdf

docker/entrypoint.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+# Runs the contact handler next to nginx. The handler is restarted if it crashes, but not when it
+# exits for missing configuration (code 78); the static site is served either way.
+(
+  cd /srv/contact || exit
+  while :; do
+    node contact.mjs
+    code=$?
+    [ "$code" -eq 78 ] && { echo "contact: not started, SMTP is not configured." >&2; exit; }
+    echo "contact: exited with $code, restarting in 5 s." >&2
+    sleep 5
+  done
+) &
+
+exec nginx -g 'daemon off;'

docker/nginx.conf

@@ -7,6 +7,13 @@ server {
 
     # TLS terminates at Dokploy's Traefik; keep redirects relative so they stay on https.
     absolute_redirect off;
+
+    # The client address arrives in X-Forwarded-For from Traefik on the private network.
+    set_real_ip_from 10.0.0.0/8;
+    set_real_ip_from 172.16.0.0/12;
+    set_real_ip_from 192.168.0.0/16;
+    real_ip_header X-Forwarded-For;
+    real_ip_recursive on;
     server_tokens off;
 
     gzip on;
@@ -24,6 +31,24 @@ server {
         return 200 "ok\n";
     }
 
+    # The contact form is the one dynamic path: server/contact.mjs, sending by SMTP.
+    location = /contact {
+        limit_except POST { deny all; }
+        client_max_body_size 64k;
+        proxy_pass http://127.0.0.1:3000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_read_timeout 30s;
+        proxy_intercept_errors on;
+        error_page 502 503 504 = @contact_down;
+    }
+    # Handler not running: send the visitor to the error page in their language.
+    location @contact_down {
+        if ($http_referer ~ "/de(/|$|#)") { return 303 /de/contact/error; }
+        return 303 /contact/error;
+    }
+
     # trailingSlash: 'never' — /team is served from /team/index.html; /team/ redirects to /team.
     location ~ ^(.+)/$ {
         return 301 $1$is_args$args;