feat: Add git.dociva.io reverse proxy for Gitea

nginx/nginx.prod.conf

@@ -14,6 +14,20 @@ server {
     }
 }
 
+# --- Gitea HTTP (ACME + redirect) ---
+server {
+    listen 80;
+    server_name git.dociva.io;
+
+    location /.well-known/acme-challenge/ {
+        root /var/www/certbot;
+    }
+
+    location / {
+        return 308 https://git.dociva.io$request_uri;
+    }
+}
+
 # Redirect www to non-www
 server {
     listen 443 ssl;
@@ -114,3 +128,40 @@ server {
         proxy_pass http://$backend_upstream/api/health;
     }
 }
+
+# --- Gitea HTTPS reverse proxy ---
+server {
+    listen 443 ssl;
+    http2 on;
+    server_name git.dociva.io;
+
+    ssl_certificate /etc/letsencrypt/live/git.dociva.io/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/git.dociva.io/privkey.pem;
+    ssl_protocols TLSv1.2 TLSv1.3;
+
+    client_max_body_size 100M;
+    resolver 127.0.0.11 valid=30s ipv6=off;
+
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+
+    location / {
+        proxy_pass http://gitea:3000;
+        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_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection $connection_upgrade;
+    }
+}
+
+# Used by Gitea (and other WS-enabled apps)
+map $http_upgrade $connection_upgrade {
+    default upgrade;
+    '' close;
+}