diff --git a/flake.nix b/flake.nix
index 0bc7545..48b6fa1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -103,7 +103,13 @@
           nixosModules = {
             # Common nixos/nix-darwin configuration shared between Linux and macOS.
             common = { pkgs, ... }: {
-              virtualisation.docker.enable = true;
+              virtualisation.docker = {
+                enable = true;
+                extraOptions = ''
+                  --data-root /var/lib/docker
+                '';
+              };
+
               services.openssh.enable = true;
               services.openssh.settings.PermitRootLogin = "prohibit-password";
               services.openssh.settings.PasswordAuthentication = false;
diff --git a/hosts/nachtigall/apps/collabora.nix b/hosts/nachtigall/apps/collabora.nix
new file mode 100644
index 0000000..cfe875e
--- /dev/null
+++ b/hosts/nachtigall/apps/collabora.nix
@@ -0,0 +1,39 @@
+{
+  config,
+  lib,
+  pkgs,
+  self,
+  ...
+}: {
+  services.nginx.virtualHosts."collabora.pub.solar" = {
+    enableACME = true;
+    forceSSL = true;
+
+    locations."/".proxyPass = "http://127.0.0.1:9980";
+  };
+
+  virtualisation = {
+    oci-containers = {
+      backend = "docker";
+
+      containers."collabora" = {
+        image = "collabora/code";
+        autoStart = true;
+        ports = [
+          "127.0.0.1:9980:9980"
+        ];
+        extraOptions = [
+          "--cap-add=MKNOD"
+          "--pull=always"
+        ];
+        environment = {
+          server_name = "collabora.pub.solar";
+          aliasgroup1 = "https://cloud.pub.solar:443";
+          DONT_GEN_SSL_CERT = "1";
+          extra_params = "--o:ssl.enable=false --o:ssl.termination=true";
+          SLEEPFORDEBUGGER = "0";
+        };
+      };
+    };
+  };
+}
diff --git a/hosts/nachtigall/apps/nextcloud.nix b/hosts/nachtigall/apps/nextcloud.nix
new file mode 100644
index 0000000..ca9ac87
--- /dev/null
+++ b/hosts/nachtigall/apps/nextcloud.nix
@@ -0,0 +1,93 @@
+{ config, pkgs, ... }:
+{
+  age.secrets."nextcloud-secrets" = {
+    file = "${flake.self}/secrets/nextcloud-secrets.age";
+    mode = "400";
+    owner = config.services.mastodon.user;
+  };
+
+  services.nginx.virtualHosts."cloud.pub.solar" = {
+    enableACME = true;
+    forceSSL = true;
+  };
+
+  services.nextcloud = {
+    hostName = "cloud.pub.solar";
+    home = "/var/lib/nextcloud";
+
+    enable = true;
+    https = true;
+    secretFile = config.age.secrets."nextcloud-secrets".path; # secret
+    phpPackage = pkgs.php82;
+
+    configureRedis = true;
+
+    notify_push = {
+      enable = true;
+    };
+
+    config = {
+      adminuser = "admin";
+      dbuser = "nextcloud";
+      dbtype = "pgsql";
+      dbname = "nextcloud";
+      dbtableprefix = "oc_";
+      overwriteProtocol = "https";
+    };
+
+    extraOptions = {
+      overwrite.cli.url = "http://cloud.pub.solar";
+
+      installed = true;
+      default_phone_region = "+49";
+      mail_sendmailmode = "smtp";
+      mail_from_address = "nextcloud";
+      mail_smtpmode = "smtp";
+      mail_smtpauthtype = "PLAIN";
+      mail_domain = "pub.solar";
+      mail_smtpname = "admins@pub.solar";
+      mail_smtpsecure = "tls";
+      mail_smtpauth = 1;
+      mail_smtphost = "mx2.greenbaum.cloud";
+      mail_smtpport = "587";
+
+      enable_previews = true;
+      enabledPreviewProviders = [
+        "OC\\Preview\\PNG"
+        "OC\\Preview\\JPEG"
+        "OC\\Preview\\GIF"
+        "OC\\Preview\\BMP"
+        "OC\\Preview\\XBitmap"
+        "OC\\Preview\\Movie"
+        "OC\\Preview\\PDF"
+        "OC\\Preview\\MP3"
+        "OC\\Preview\\TXT"
+        "OC\\Preview\\MarkDown"
+      ];
+      preview_max_x = "1024";
+      preview_max_y = "768";
+      preview_max_scale_factor = "1";
+
+      auth.bruteforce.protection.enabled = true;
+      trashbin_retention_obligation = "auto,7";
+      skeletondirectory = "";
+      defaultapp = "file";
+      activity_expire_days = "14";
+      integrity.check.disabled = false;
+      updater.release.channel = "stable";
+      loglevel = 0;
+      # maintenance = false;
+      app_install_overwrite = [
+        "pdfdraw"
+        "integration_whiteboard"
+      ];
+      htaccess.RewriteBase = "/";
+      theme = "";
+      simpleSignUpLink.shown = false;
+    };
+
+    caching.redis = true;
+    autoUpdateApps.enable = true;
+    database.createLocally = true;
+  };
+}
diff --git a/hosts/nachtigall/default.nix b/hosts/nachtigall/default.nix
index ccd276f..f4c1ed8 100644
--- a/hosts/nachtigall/default.nix
+++ b/hosts/nachtigall/default.nix
@@ -10,10 +10,12 @@
       ./nix.nix
       ./apps/nginx.nix
 
+      ./apps/collabora.nix
       ./apps/forgejo.nix
       ./apps/keycloak.nix
       ./apps/mailman.nix
       ./apps/mastodon.nix
+      ./apps/nextcloud.nix
       ./apps/nginx-mastodon.nix
       ./apps/nginx-mastodon-files.nix
       ./apps/nginx-website.nix
diff --git a/secrets/nextcloud-secrets.age b/secrets/nextcloud-secrets.age
new file mode 100644
index 0000000..937ccec
--- /dev/null
+++ b/secrets/nextcloud-secrets.age
@@ -0,0 +1,28 @@
+age-encryption.org/v1
+-> ssh-ed25519 iDKjwg GHVh1GUADEN6UVTUYntCaYfEqH+LX+gvaICkBHJ5OUY
+rfoD++gVdnZ5HSlXbCOy8Pn7if6QM2WRaShpk0dCJ48
+-> ssh-ed25519 uYcDNw kKeYQIaKjVDKMDBkluuxarRfv2wR9W5TKHzbu1DR2hQ
+bfFYcbcQ7De5hwkCng/CIZXWLHgr/cum0+OfRs5ESvI
+-> ssh-rsa kFDS0A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+-> ssh-ed25519 YFSOsg X4DtlP1y5JXKyaYXJ/l18S7cOGIDlwk3vhrO0Vk6t3U
+OXzEp3tRncra6pBvDoeiLkF4SlaHZ6E6j+UV0q1WB80
+-> ssh-ed25519 iHV63A AYUNvys+v75VarEdcZ1g9r9bnW76Tfq91gWnyED7kB0
+zloI/t4Dfa4re850ldwdFEjbF1OR/5G8VBAl9n7umEs
+-> ssh-ed25519 BVsyTA glhHHYg1w7qntg8J3y+6zKJHBaC6PZWFQJnmiQR6axw
+WiIDKiuzouGyiyANmEp25T1Dv2IRyRx+lovSpdFP/Dc
+-> wcj`iUv7-grease <d5F W
+dXdOZ0LN94OwYEvaS4paokqfZm7hqw
+--- oEfnrJu0i9DSupMbQS0hKyVuI9mguqQXDcvXjXUIFS0
+����a�W(?�R����v��9S$� :ʉ{I���<��|&�y$��9U�C>}�Ss�Q!��/�4��Y)�V\Q\y_��g+�HڄHo�N�@�w�d�
�@ ���<:�NO
����X����!��/̬Y7��_��˂ʠ�����ѦA}^�q
+�؃
�����ɐ`:/"i��qj��G��c�[�>Y����tT��:�h$��O�h�#,���R��[ץF����3a]����{Jѷב��"Ƣ�ު��
\ No newline at end of file
diff --git a/secrets/secrets.nix b/secrets/secrets.nix
index cb06356..5b060b5 100644
--- a/secrets/secrets.nix
+++ b/secrets/secrets.nix
@@ -35,4 +35,6 @@ in {
   "matrix-mautrix-telegram-env-file.age".publicKeys = nachtigallKeys ++ baseKeys;
   "matrix-synapse-signing-key.age".publicKeys = nachtigallKeys ++ baseKeys;
   "matrix-synapse-secret-config.yaml.age".publicKeys = nachtigallKeys ++ baseKeys;
+
+  "nextcloud-secrets.age".publicKeys = nachtigallKeys ++ baseKeys;
 }