Enabled CI to provide additional support for s390x and power

Signed-off-by: Nishan Acharya IBM <mamabapuni@gmail.com>

.github/workflows/build.yaml

@@ -0,0 +1,66 @@
+name: Build and Push Image for Multi-Arch CI- Additional support for s390x & Power along with arm64 & amd64
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+      - 'release-[0-9]+\.[0-9]+\.[0-9]+'
+    tags:
+      - 'latest'
+      - 'v*'
+
+
+env:
+  IMAGE_NAME: "odh-model-controller"
+  REPO_NAME: "opendatahub"
+  REGISTRY_NAME: "quay.io"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Quay.io
+        uses: docker/login-action@v3
+        with:
+          registry: quay.io
+          username: ${{ secrets.QUAY_USER }}
+          password: ${{ secrets.QUAY_ACCESS_TOKEN }}
+
+      - name: Set Docker Tag
+        run: |
+          if [[ "${GITHUB_REF}" == "refs/heads/main" ]]; then
+            echo "TAG=latest" >> $GITHUB_ENV
+          elif [[ "${GITHUB_REF}" == refs/heads/release-* ]]; then
+            VERSION="${GITHUB_REF#refs/heads/release-}"
+            echo "TAG=v${VERSION}" >> $GITHUB_ENV
+          elif [[ "${GITHUB_REF}" == refs/tags/v* ]]; then
+            TAG="${GITHUB_REF#refs/tags/}"
+            echo "TAG=${TAG}" >> $GITHUB_ENV
+          else
+            echo "Branch or tag is not found. Image can't be pushed. Please check and try again!!"
+            exit 1
+          fi
+
+      - name: Build and push controller image
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x
+          context: .
+          file: Containerfile
+          push: true
+          tags: |
+            ${{ env.REGISTRY_NAME }}/${{ env.REPO_NAME }}/${{ env.IMAGE_NAME }}:${{ env.TAG }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          debug: true