feat: switch to docker/build-push-action

Custom build-push step did not provide OIDC
token.  Switching to standard GitHub Action.
Also added Checkout, Qemu, and Buildx to
accomodate multiple platforms.

Signed-off-by: Arthur Savage <[email protected]>

.github/workflows/image.yml

@@ -7,33 +7,44 @@ jobs:
         contents: read
         packages: write
         id-token: write
+
       steps:
+        - name: checkout
+          uses: actions/[email protected]
+
+        - name: qemu-setup
+          uses: docker/setup-qemu-action@v3
+
+        - name: docker-buildx
+          uses: docker/setup-buildx-action@v3
+
         - name: login-quay
           uses: docker/login-action@v3
           with:
             registry: quay.io/rh-ee-asavage
             username: ${{ secrets.USERNAME }}
             password: ${{ secrets.PASSWORD }}
+
         - name: install-cosign
           uses: sigstore/cosign-installer@main
           with:
             cosign-release: 'v2.2.4'
+
         - name: check-cosign-install
           run: cosign version
+
         - name: checkout
           uses: actions/[email protected]
           with:
             fetch-depth: 0
-        - name: build-push
-          run: |
-            echo "Test message build-push"
-            cat > ./Dockerfile <<EOF
-            FROM alpine
-            CMD ["echo", "Hello container!"]
-            EOF
-            docker build -t quay.io/rh-ee-asavage/gha-image-test:latest .
-            docker push quay.io/rh-ee-asavage/gha-image-test:latest
-            echo "Success build-sign-push"
+
+        - name: build-push-action
+          id: build-push-image
+          uses: docker/build-push-action@v3
+          with:
+            push: true
+            tags: quay.io/rh-ee-asavage/gha-image-test:latest
+
         - name: sign-image
           run: |
             cosign sign -y quay.io/rh-ee-asavage/gha-image-test:latest${{ steps.build-push.outputs.digest }}