diff --git a/modules/binfmt/default.nix b/modules/binfmt/default.nix
index 3010e1f..ecb9cc3 100644
--- a/modules/binfmt/default.nix
+++ b/modules/binfmt/default.nix
@@ -1,11 +1,9 @@
 {
-  config,
-  lib,
-  pkgs,
-  ...
-}: {
   boot.binfmt.emulatedSystems = ["aarch64-linux" "i686-linux" "riscv64-linux"];
   nix.extraOptions = ''
     extra-platforms = aarch64-linux arm-linux i686-linux riscv64-linux
   '';
+
+  # XXX For some reason `docker buildx` isn't aware of this:
+  # https://discourse.nixos.org/t/docker-ignoring-platform-when-run-in-nixos/21120/14
 }
diff --git a/modules/docker/default.nix b/modules/docker/default.nix
index b4bb0e1..c29f292 100644
--- a/modules/docker/default.nix
+++ b/modules/docker/default.nix
@@ -4,6 +4,7 @@
   ...
 }: {
   virtualisation.podman.enable = true;
+  virtualisation.docker.enable = true;
   users.users.${config.ccr.username}.extraGroups = ["docker"];
   environment.systemPackages = with pkgs; [
     docker-compose