Add new workflow to push k8 operator to prod

.github/workflows/release_docker_k8_operator.yaml

@@ -0,0 +1,38 @@
+name: Release Docker image for K8 operator 
+on: [workflow_dispatch]
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: 🔧 Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: 🔧 Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: 🐋 Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: k8-operator
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: infisical/kubernetes-operator:latest
+
+      - uses: actions/setup-go@v2
+
+      - name: Upload CRD manifest
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: dist/install-secrets-operator.yaml
+          tag: ${{ github.ref }}