Setup mail server and restructure some things

config/hosts/web-public-2/virtualHosts/git.grzb.de.nix

@@ -0,0 +1,33 @@
+{ ... }:
+{
+  services.nginx.virtualHosts."git.grzb.de" = {
+    forceSSL = true;
+    enableACME = true;
+    listen = [
+      { 
+        addr = "localhost";
+        port = 1234;
+      } # workaround for enableACME check
+      {
+        addr = "localhost";
+        port = 8443;
+        ssl = true;
+        proxyProtocol = true;
+      }
+    ];
+    locations."/" = {
+      proxyPass = "http://gitlab.vs.grzb.de:80";
+      extraConfig = ''
+        gzip off;
+        proxy_read_timeout      300;
+        proxy_connect_timeout   300;
+        proxy_redirect          off;
+      '';
+    };
+    extraConfig = ''
+      client_max_body_size 1024m;
+      add_header X-Frame-Options DENY;
+      add_header X-Content-Type-Options nosniff;
+    '';
+  };
+}