start set up for multi-location nixos flake

nixos/hosts/olympus/gitea/configuration.nix

@@ -0,0 +1,51 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ lib, config, pkgs, ... }:
+{
+  imports = [ ];
+
+  networking.hostName = "gitea";
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "21.11"; # Did you read the comment?
+
+  # Additional packages
+  environment.systemPackages = with pkgs; [ ];
+
+  environment.noXlibs = lib.mkForce false;
+
+  networking.firewall.allowedTCPPorts = [ config.services.gitea.httpPort ];
+
+  services.openssh.startWhenNeeded = false;
+
+  services.fail2ban = {
+    enable = true;
+    maxretry = 3;
+  };
+
+  services.gitea = {
+    enable = true;
+    domain = "git.0x76.dev";
+    rootUrl = "https://git.0x76.dev";
+    lfs.enable = true;
+    dump.type = "tar.gz";
+    database.type = "postgres";
+    ssh.clonePort = 42;
+    disableRegistration = true;
+    cookieSecure = true;
+    
+    settings = {
+      ui = {
+        DEFAULT_THEME = "arc-green";
+        USE_SERVICE_WORKER = true;
+      };
+    };
+  };
+}