Convert the nextcloud module into a container

hosts/proxima/containers/nextcloud/default.nix

@@ -0,0 +1,42 @@
+{ config, ... }:
+{
+  sops.secrets = {
+    "nextcloud/admin-password" = { };
+    "nextcloud/gmail-password" = { };
+    tailscale-auth-key = { };
+  };
+
+  containers.nextcloud = {
+    autoStart = true;
+    ephemeral = true;
+    bindMounts = {
+      "/run/secrets/nextcloud/admin-password" = { };
+      "/run/secrets/nextcloud/gmail-password" = { };
+      "/run/secrets/tailscale-auth-key" = { };
+      "/data/nextcloud".isReadOnly = false;
+      "/data/postgresql".isReadOnly = false;
+      "/var/lib/tailscale" = {
+        hostPath = "/var/lib/tailscale-nextcloud";
+        isReadOnly = false;
+      };
+    };
+
+    specialArgs = {
+      inherit (config.networking) domain;
+    };
+    config =
+      { domain, ... }:
+      {
+        system.stateVersion = "24.05";
+        networking = {
+          inherit domain;
+        };
+
+        imports = [
+          ./nextcloud.nix
+          ./email-server.nix
+          ./tailscale.nix
+        ];
+      };
+  };
+}