feat(build): support for multi arch container image (#233)

* support for multi arch container image via github actions
* suffix amd64 arch tag in zfs driver image

Signed-off-by: prateekpandey14 <prateek.pandey@mayadata.io>

.github/workflows/release.yml

@@ -0,0 +1,57 @@
+# Copyright 2020 The OpenEBS Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+name: release
+
+on:
+  create:
+    tags:
+      - 'v*'
+
+jobs:
+  csi-driver:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Set Tag
+        run: |
+          TAG="${GITHUB_REF#refs/*/v}"
+          echo "::set-env name=TAG::${TAG}"
+          echo "::set-env name=RELEASE_TAG::${TAG}"
+          echo "RELEASE_TAG ${TAG}"
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          version: latest
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build & Push Image
+        env:
+          IMAGE_ORG: ${{ secrets.IMAGE_ORG}}
+        run: |
+          make docker.buildx.csi-driver
+          make buildx.push.csi-driver