diff --git a/.github/workflows/build-devcontainer.yml b/.github/workflows/build-devcontainer.yml
new file mode 100644
index 0000000..dfb6012
--- /dev/null
+++ b/.github/workflows/build-devcontainer.yml
@@ -0,0 +1,17 @@
+name: Build devcontainer
+
+on:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - name: Build devcontainer
+        uses: devcontainers/ci@8bf61b26e9c3a98f69cb6ce2f88d24ff59b785c6 # v0.3
+        with:
+          imageName: ghcr.io/comcode-org/white-bunnybat-devcontainer
+          cacheFrom: ghcr.io/comcode-org/white-bunnybat-devcontainer
+          push: always
diff --git a/.github/workflows/fontforge-validate.yml b/.github/workflows/fontforge-validate.yml
index d743f2e..d131b49 100644
--- a/.github/workflows/fontforge-validate.yml
+++ b/.github/workflows/fontforge-validate.yml
@@ -31,6 +31,5 @@ jobs:
         # v0.3 (at the time of commit)
         uses: devcontainers/ci@8bf61b26e9c3a98f69cb6ce2f88d24ff59b785c6
         with:
-          # never push the devcontainer docker image to a registry ... for now
-          push: never
+          cacheFrom: ghcr.io/comcode-org/white-bunnybat-devcontainer
           runCmd: ./validate.py white-bunnybat.sfd