DISPATCH-2338: chore(gha): build Dockerfiles in CI (#1728)

* DISPATCH-2338: chore(gha): build Dockerfiles in CI

* Bump docker/build-push-action from 5 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yaml

@@ -750,11 +750,21 @@ jobs:
   container-images:
     name: Container Images
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        # TODO(jdanek): commented out Dockerfiles are broken and don't build
+        dockerfile:
+          - Dockerfile
+          # - dockerfiles/Dockerfile-centos7
+          - dockerfiles/Dockerfile-debian
+          #- dockerfiles/Dockerfile-fedora
+          #- dockerfiles/Dockerfile-ubuntu
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+
       - name: Build Debian image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
-          file: dockerfiles/Dockerfile-debian
+          file: ${{ matrix.dockerfile }}
           context: .