Add woodpecker host running a woodpecker-server and -agent for CI

config/hosts/woodpecker/woodpecker-server/nginx.nix

@@ -0,0 +1,57 @@
+# Sources for this configuration:
+# - https://woodpecker-ci.org/docs/administration/deployment/nixos
+# - https://woodpecker-ci.org/docs/administration/proxy
+
+{ config, pkgs, ... }:
+
+{
+  services.nginx = {
+    enable = true;
+
+    virtualHosts."acme-woodpecker.hamburg.ccc.de" = {
+      default = true;
+      enableACME = true;
+      serverName = "woodpecker.hamburg.ccc.de";
+
+      listen = [
+        {
+          addr = "0.0.0.0";
+          port = 31820;
+        }
+      ];
+    };
+
+    virtualHosts."woodpecker.hamburg.ccc.de" = {
+      default = true;
+      forceSSL = true;
+      useACMEHost = "woodpecker.hamburg.ccc.de";
+
+      listen = [
+        {
+          addr = "0.0.0.0";
+          port = 8443;
+          ssl = true;
+          proxyProtocol = true;
+        }
+      ];
+
+      locations."/" = {
+        proxyPass = "http://localhost${config.services.woodpecker-server.environment.WOODPECKER_SERVER_ADDR}";
+      };
+
+      extraConfig = ''
+        # Make use of the ngx_http_realip_module to set the $remote_addr and
+        # $remote_port to the client address and client port, when using proxy
+        # protocol.
+        # First set our proxy protocol proxy as trusted.
+        set_real_ip_from 172.31.17.140;
+        # Then tell the realip_module to get the addreses from the proxy protocol
+        # header.
+        real_ip_header proxy_protocol;
+      '';
+    };
+  };
+
+  networking.firewall.allowedTCPPorts = [ 8443 31820 ];
+  networking.firewall.allowedUDPPorts = [ 8443 ];
+}