diff --git a/.github/workflows/mainline-to-dev.yml b/.github/workflows/mainline-to-dev.yml
new file mode 100644
index 0000000..9b44f42
--- /dev/null
+++ b/.github/workflows/mainline-to-dev.yml
@@ -0,0 +1,34 @@
+name: Release Beta
+
+on:
+  push:
+    branches: [ mainline ]
+
+jobs:
+  release-dev:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Cache node modules
+      uses: actions/cache@v2
+      env:
+        cache-name: cache-node-modules
+      with:
+        # npm cache files are stored in `~/.npm` on Linux/macOS
+        path: ~/.npm
+        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-build-${{ env.cache-name }}-
+          ${{ runner.os }}-build-
+          ${{ runner.os }}-
+    - name: Use Node.js 14
+      uses: actions/setup-node@v2
+      with:
+        node-version: '14'
+        cache: 'npm'
+    - name: Install dependencies 📦
+      run: yarn install --frozen-lockfile
+    - name: Build 🛠
+      run: yarn build
+    - name: Deploy beta⛳️
+      run: yarn deploy:beta