keycloak: add ifsr theme

modules/keycloak/default.nix

@@ -0,0 +1,37 @@
+{ config, pkgs, lib, ... }:
+let
+  domain = "sso.${config.networking.domain}";
+in
+{
+  sops.secrets."keycloak/db" = { };
+  services.keycloak = {
+    enable = true;
+    # we use unstable as the release in stable is insecure
+    # package = nixpkgs-unstable.legacyPackages.x86_64-linux.keycloak;
+    settings = {
+      http-port = 8086;
+      https-port = 19000;
+      hostname = domain;
+      proxy = "edge";
+    };
+    # The module requires a password for the DB and works best with its own DB config
+    # Does an automatic Postgresql configuration
+    database = {
+      passwordFile = config.sops.secrets."keycloak/db".path;
+    };
+    initialAdminPassword = "plschangeme";
+    themes = with pkgs ; {
+      ifsr = keycloak_ifsr_theme;
+    };
+  };
+  services.nginx.virtualHosts."${domain}" = {
+    locations."/" = {
+      proxyPass = "http://127.0.0.1:${toString config.services.keycloak.settings.http-port}";
+      extraConfig = ''
+        proxy_buffer_size 128k;
+        proxy_buffers 4 256k;
+        proxy_busy_buffers_size 256k;
+      '';
+    };
+  };
+}