diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index ded48e7..e7777af 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -55,7 +55,7 @@ jobs:
           set -euo pipefail
 
           owner="${GITHUB_REPOSITORY_OWNER,,}"
-          image="ghcr.io/${owner}/markdownbrain"
+          image="ghcr.io/${owner}/mdbrain"
 
           tags=()
           if [[ "${GITHUB_REF}" == refs/tags/v* ]]; then
@@ -82,6 +82,7 @@ jobs:
           } >> "$GITHUB_OUTPUT"
 
       - name: Build (and push)
+        if: ${{ github.event_name != 'pull_request' }}
         uses: docker/build-push-action@v6
         with:
           context: .
@@ -92,5 +93,18 @@ jobs:
           labels: |
             org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
             org.opencontainers.image.revision=${{ github.sha }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          cache-from: type=registry,ref=${{ steps.meta.outputs.image }}:buildcache
+          cache-to: type=registry,ref=${{ steps.meta.outputs.image }}:buildcache,mode=max
+
+      - name: Build (PR)
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile
+          platforms: ${{ steps.platforms.outputs.platforms }}
+          push: false
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: |
+            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
+            org.opencontainers.image.revision=${{ github.sha }}