OCP4: Fix pr image workflow

There was a issue with existing pr image build workflow, github does not let workflow to use metal-toolbox/container-push/.github/workflows/container-push.yml@main in the steps, this PR replace metal-toolbox to build and push image directly

.github/workflows/k8s-content-pr.yaml

@@ -47,21 +47,54 @@ jobs:
       id-token: write
       packages: write
     runs-on: ubuntu-latest
+    outputs:
+      image-digest: ${{ steps.container_info.outputs.image-digest }}
+      image-tags: ${{ steps.container_info.outputs.image-tags }}
     steps:
-      - name: Checkout PR branch
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           ref: refs/pull/${{ needs.get-pr-number.outputs.pr-number }}/head
-      - name: Build and push container image
-        uses: metal-toolbox/container-push/.github/workflows/container-push.yml@main
+      - name: Login to ghcr.io
+        uses: docker/login-action@v3.0.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
         with:
-          name: k8scontent
-          tag: ${{ needs.get-pr-number.outputs.pr-number }}
-          latest: false
-          registry_org: complianceascode
-          dockerfile_path: ./Dockerfiles/ocp4_content
-          licenses: BSD
-          vendor: ComplianceAsCode authors
+          images: ghcr.io/complianceascode/k8scontent
+          tags: |
+            type=raw,value=${{ needs.get-pr-number.outputs.pr-number }}
+            type=sha,format=long
+          labels: |
+            org.opencontainers.image.source=${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}
+            org.opencontainers.image.title=Kubernetes content
+            org.opencontainers.image.version=${{ needs.get-pr-number.outputs.pr-number }}
+            org.opencontainers.image.licenses='Apache-2.0'
+            org.opencontainers.image.vendor='Compliance Operator Authors'
+      - name: Build container images and push
+        id: docker_build
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfiles/ocp4_content
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          push: true
+          platforms: 'linux/amd64'
+      - name: Get container info
+        id: container_info
+        run: |
+          image_tags="${{ needs.get-pr-number.outputs.pr-number }}"
+          echo "image-digest=${{ steps.docker_build.outputs.digest }}" >> $GITHUB_OUTPUT
+          echo "image-tags=${{ needs.get-pr-number.outputs.pr-number }}" >> $GITHUB_OUTPUT
 
   comment-pr:
     needs: