diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 5e0a750..1c09d87 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -10,3 +10,7 @@ jobs:
     - uses: cachix/cachix-action@v3
       with:
         name: xe
+    - run: |
+        nix-build docker.nix
+        docker load -i result
+        docker tag xena/christinewebsite:latest xena/christinewebsite:$(echo $GITHUB_SHA | head -c7)
diff --git a/docker.nix b/docker.nix
index b1b6879..df925a0 100644
--- a/docker.nix
+++ b/docker.nix
@@ -6,7 +6,7 @@ let
   site = callPackage ./site.nix { };
 
   dockerImage = pkg:
-    pkgs.dockerTools.buildImage {
+    pkgs.dockerTools.buildLayeredImage {
       name = "xena/christinewebsite";
       tag = pkg.version;