diff --git a/.github/workflows/ci-image-build.yml b/.github/workflows/ci-image-build.yml
new file mode 100644
index 0000000000..7166abaa56
--- /dev/null
+++ b/.github/workflows/ci-image-build.yml
@@ -0,0 +1,101 @@
+name: CI (test image build for a PR with build related changes)
+
+on:
+  pull_request:
+    branches:
+      - "main"
+      - "release-*"
+
+jobs:
+  checks:
+    runs-on: ubuntu-latest
+    outputs:
+      should-test: ${{ steps.check-dockerfile.outputs.should-test }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: What files changed?
+        id: changed
+        uses: tj-actions/changed-files@v44
+        with:
+          files: |
+            Dockerfile
+            package-lock.json
+
+      - name: Check if build related files have been changed in a PR
+        id: check-changes
+        env:
+          IS_PR: ${{ !!github.event.pull_request }}
+          ANY_MODIFIED: ${{ steps.changed.outputs.any_modified }}
+        run: |
+          TEST_IMAGE_BUILD=$(
+            if [[ $IS_PR == true ]] && [[ $ANY_MODIFIED == true ]]; then
+              echo "true"
+            else
+              echo "false"
+            fi
+          )
+
+          echo "is-pr=$IS_PR" >> "$GITHUB_OUTPUT"
+          echo "changed=${ANY_MODIFIED:-false}" >> "$GITHUB_OUTPUT"
+          echo "should-test=$TEST_IMAGE_BUILD" >> "$GITHUB_OUTPUT"
+
+      - name: Summarize findings
+        env:
+          MODIFIED_FILES: ${{ steps.changes.outputs.all_modified_files }}
+        run: |
+          cat >> "$GITHUB_STEP_SUMMARY" <<EOF
+          ## Findings
+          PR triggered? \`${{ steps.check-dockerfile.outputs.is-pr }}\`
+          PR includes a build file related change? \`${{ steps.check-dockerfile.outputs.changed }}\`
+          Should the image build be tested? \`${{ steps.check-dockerfile.outputs.should-test }}\`
+          EOF
+
+          if ${MODIFIED_FILES}; then
+            echo "## Build related modified files" >> "$GITHUB_STEP_SUMMARY"
+            for file in ${MODIFIED_FILES}; do
+              echo "  - \`$file\`" >> "$GITHUB_STEP_SUMMARY"
+            done
+          fi
+
+  #
+  # Based on:
+  #   - image-build.yaml
+  #   - konveyor/release-tools/.github/workflows/build-push-images.yaml@main
+  #
+  # Only test the image build, no push to quay is required.
+  #
+  test-image-build:
+    runs-on: ubuntu-latest
+    needs: checks
+    if: ${{ needs.checks.outputs.should-test == 'true' }}
+
+    strategy:
+      fail-fast: true
+      matrix:
+        architecture: # keep this list in sync with `image-build.yaml`
+          - amd64
+          - arm64
+
+    steps:
+      - name: Checkout merge commit for PR${{ github.event.pull_request.number }}
+        uses: actions/checkout@v4
+
+      - name: Setup QEMU to be able to build on ${{ matrix.architecture }}
+        if: ${{ matrix.architecture != 'amd64' }}
+        uses: docker/setup-qemu-action@master
+        with:
+          platforms: ${{ matrix.architecture }}
+
+      - name: Test build image on ${{ matrix.architecture }}
+        id: test-build
+        uses: redhat-actions/buildah-build@main
+        with:
+          image: "tackle2-ui"
+          tags: pr${{ github.event.pull_request.number }}-${{ matrix.architecture }}
+          extra-args: "--no-cache --rm --ulimit nofile=4096:4096"
+          archs: ${{ matrix.architecture }}
+          labels: ""
+          containerfiles: "./Dockerfile"
+          context: "."
diff --git a/.github/workflows/ci-repo.yml b/.github/workflows/ci-repo.yml
index e5cc1c63ee..1677e134f5 100644
--- a/.github/workflows/ci-repo.yml
+++ b/.github/workflows/ci-repo.yml
@@ -17,10 +17,11 @@ on:
   workflow_dispatch:
 
 jobs:
-  unit-test-lookup-image:
+  unit-test-lookups:
     runs-on: ubuntu-latest
     outputs:
       builder-image: ${{ steps.grepBuilder.outputs.builder }}
+
     steps:
       - uses: actions/checkout@v4
 
@@ -33,10 +34,10 @@ jobs:
 
   unit-test:
     runs-on: ubuntu-latest
-    needs: unit-test-lookup-image
+    needs: unit-test-lookups
 
     # Use the same container as the Dockerfile's "FROM * as builder"
-    container: ${{ needs.unit-test-lookup-image.outputs.builder-image }}
+    container: ${{ needs.unit-test-lookups.outputs.builder-image }}
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/image-build.yaml b/.github/workflows/image-build.yaml
index 379fa13d82..48d82e64bd 100644
--- a/.github/workflows/image-build.yaml
+++ b/.github/workflows/image-build.yaml
@@ -20,9 +20,13 @@ jobs:
       registry: "quay.io/sdickers"
       image_name: "tackle2-ui"
       containerfile: "./Dockerfile"
+
+      # keep the architectures in sync with `ci-image-build.yml`
       architectures: '[ "amd64", "arm64" ]'
+
       # 2023-03-19: currently needed for npm@10
       extra-args: "--ulimit nofile=4096:4096"
+
     secrets:
       registry_username: ${{ secrets.QUAY_PUBLISH_ROBOT }}
       registry_password: ${{ secrets.QUAY_PUBLISH_TOKEN }}