fix: add gha to upload to cdn on release

frontend/.github/workflows/release_to_cdn.yml

@@ -0,0 +1,43 @@
+name: 'Release static assets to CDN'
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [14.x]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: yarn install & build
+      run: |
+        yarn && yarn build
+      working-directory: ./${{ github.workflow }}
+      env:
+        CI: true
+    - name: Get the version
+      id: get_version
+      run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
+    - uses: aws-actions/configure-aws-credentials@v1
+      with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: ${{ secrets.AWS_DEFAULT_REGION }}
+    - name: Copy shared files
+      run: |
+        aws s3 cp build/static s3://getunleash-static/unleash/${{ steps.get_version.outputs.VERSION }}/static --recursive
+    - name: Deploy to AWS
+      run:
+        ./deploy.sh ${{ github.workflow }}
+      working-directory: ./${{ github.workflow }}
+