Added Github actions

Author: mmahipal

.github/workflows/github-actions.yml

@@ -0,0 +1,47 @@
+name: Docker
+
+on:
+  push
+
+env:
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: ghcr.io
+  # github.repository as <account>/<repo>
+  IMAGE_NAME: ${{ github.repository }}
+
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Golang setup
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.16
+        id: go
+        
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      # Login against a Docker registry except on PR
+      # https://github.com/docker/login-action
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@28218f9b04b4f3f62068d7b6ce6ca5b26e35336c
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Build and push Operator image (don't push on PR)
+      - name: Build and push Docker image
+        if: github.event_name != 'pull_request'
+        run:  |
+          make generate
+          make manifests
+          IMAGE=${{ env.IMAGE_NAME }}
+          IMAGE=${IMAGE,,}
+          make docker-build IMG="${{ env.REGISTRY }}/${IMAGE}:${GITHUB_REF##*/}"
+          docker push "${{ env.REGISTRY }}/${IMAGE}:${GITHUB_REF##*/}"
+          docker rmi "${{ env.REGISTRY }}/${IMAGE}:${GITHUB_REF##*/}" && docker system prune -f
+          rm -rf bin/