Add docker release to pipeline

.github/workflows/release.yaml

@@ -6,9 +6,21 @@ on:
       - 'v*'
 
 jobs:
+    runs-on: ubuntu-latest
+    name: Set up environment
+    steps:
+      - name: Set Version Environment Variables
+        run: |
+          echo "VERSION_TAG=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
+          # Remove leading v
+          # Do parameter expansion outside of assignment
+          version_tag=${{ env.VERSION }}
+          semvar=${version_tag#v}
+          echo "SEMANTIC_VERSION=$semvar" >> $GITHUB_ENV
+
   publish-binaries:
     runs-on: ubuntu-latest
-    name: Publish release binaries
+    name: Publish release binaries to GitHub
     steps:
       - name: Cancel Previous Runs
         uses: styfle/[email protected]
@@ -19,7 +31,7 @@ jobs:
       - name: Run tests
         run: make test-docker
       - name: Build binaries
-        run: SEMANTIC_VERSION=${GITHUB_REF#refs/*/} make release-docker
+        run: SEMANTIC_VERSION=${{ env.SEMANTIC_VERSION }} make release-docker
       - name: Create release
         uses: softprops/action-gh-release@v1
         with:
@@ -31,3 +43,20 @@ jobs:
             ./bin/release/storageos_linux_amd64.sha256
             ./bin/release/storageos_windows_amd64
             ./bin/release/storageos_windows_amd64.sha256
+
+  dockerhub-release:
+    runs-on: ubuntu-18.04
+    name: Publish container to Dockerhub
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Login to container registry
+        uses: docker/login-action@v1
+        with:
+          registry: docker.io
+          username: ${{ secrets.DOCKERHUB_CLI_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_CLI_PASSWORD }}
+      - name: Build image
+        run: SEMANTIC_VERSION=${{ env.SEMANTIC_VERSION }} make build-cli-image
+      - name: Push image
+        run: SEMANTIC_VERSION=${{ env.SEMANTIC_VERSION }} make push-cli-image