diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
new file mode 100644
index 00000000000..7306c14035f
--- /dev/null
+++ b/.github/workflows/pr.yml
@@ -0,0 +1,150 @@
+name: PR
+
+on:
+  push:
+    branches:
+      - lszomoru/pipeline-improvements
+
+jobs:
+  # linux:
+  #   runs-on: ubuntu-latest
+  #   env:
+  #     CHILD_CONCURRENCY: "1"
+  #     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   # TODO: rename azure-pipelines/linux/xvfb.init to github-actions
+  #   - run: |
+  #       sudo apt-get update
+  #       sudo apt-get install -y libxkbfile-dev pkg-config libsecret-1-dev libxss1 dbus xvfb libgtk-3-0 libgbm1
+  #       sudo cp build/azure-pipelines/linux/xvfb.init /etc/init.d/xvfb
+  #       sudo chmod +x /etc/init.d/xvfb
+  #       sudo update-rc.d xvfb defaults
+  #       sudo service xvfb start
+  #     name: Setup Build Environment
+  #   - uses: actions/setup-node@v1
+  #     with:
+  #       node-version: 10
+  #   # TODO: cache node modules
+  #   - run: yarn --frozen-lockfile
+  #     name: Install Dependencies
+  #   - run: yarn electron x64
+  #     name: Download Electron
+  #   - run: yarn gulp hygiene
+  #     name: Run Hygiene Checks
+  #   - run: yarn monaco-compile-check
+  #     name: Run Monaco Editor Checks
+  #   - run: yarn valid-layers-check
+  #     name: Run Valid Layers Checks
+  #   - run: yarn compile
+  #     name: Compile Sources
+  #   - run: yarn download-builtin-extensions
+  #     name: Download Built-in Extensions
+  #   - run: DISPLAY=:10 ./scripts/test.sh --tfs "Unit Tests"
+  #     name: Run Unit Tests (Electron)
+  #   - run: DISPLAY=:10 yarn test-browser --browser chromium
+  #     name: Run Unit Tests (Browser)
+  #   - run: DISPLAY=:10 ./scripts/test-integration.sh --tfs "Integration Tests"
+  #     name: Run Integration Tests (Electron)
+
+  # windows:
+  #   runs-on: windows-2016
+  #   env:
+  #     CHILD_CONCURRENCY: "1"
+  #     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   - uses: actions/setup-node@v1
+  #     with:
+  #       node-version: 10
+  #   - uses: actions/setup-python@v1
+  #     with:
+  #       python-version: '2.x'
+  #   - run: yarn --frozen-lockfile
+  #     name: Install Dependencies
+  #   - run: yarn electron
+  #     name: Download Electron
+  #   - run: yarn gulp hygiene
+  #     name: Run Hygiene Checks
+  #   - run: yarn monaco-compile-check
+  #     name: Run Monaco Editor Checks
+  #   - run: yarn valid-layers-check
+  #     name: Run Valid Layers Checks
+  #   - run: yarn compile
+  #     name: Compile Sources
+  #   - run: yarn download-builtin-extensions
+  #     name: Download Built-in Extensions
+  #   - run: .\scripts\test.bat --tfs "Unit Tests"
+  #     name: Run Unit Tests (Electron)
+  #   - run: yarn test-browser --browser chromium
+  #     name: Run Unit Tests (Browser)
+  #   - run: .\scripts\test-integration.bat --tfs "Integration Tests"
+  #     name: Run Integration Tests (Electron)
+
+  # darwin:
+  #   runs-on: macos-latest
+  #   env:
+  #     CHILD_CONCURRENCY: "1"
+  #     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   - uses: actions/setup-node@v1
+  #     with:
+  #       node-version: 10
+  #   - run: yarn --frozen-lockfile
+  #     name: Install Dependencies
+  #   - run: yarn electron x64
+  #     name: Download Electron
+  #   - run: yarn gulp hygiene
+  #     name: Run Hygiene Checks
+  #   - run: yarn monaco-compile-check
+  #     name: Run Monaco Editor Checks
+  #   - run: yarn valid-layers-check
+  #     name: Run Valid Layers Checks
+  #   - run: yarn compile
+  #     name: Compile Sources
+  #   - run: yarn download-builtin-extensions
+  #     name: Download Built-in Extensions
+  #   - run: ./scripts/test.sh --tfs "Unit Tests"
+  #     name: Run Unit Tests (Electron)
+  #   - run: yarn test-browser --browser chromium --browser webkit
+  #     name: Run Unit Tests (Browser)
+  #   - run: ./scripts/test-integration.sh --tfs "Integration Tests"
+  #     name: Run Integration Tests (Electron)
+
+  monaco:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2-beta
+        with:
+          node-version: 12
+
+      - name: Compute yarn cache key
+        id: yarn-cache-key
+        run: echo "::set-output name=value::${{ hashFiles('**/yarn.lock') }}"
+
+      - name: Cache root node modules
+        id: root-node-modules # use this to check for `cache-hit` (`steps.root-node-modules.outputs.cache-hit != 'true'`)
+        uses: actions/cache@v2
+        env:
+          cache-name: root-node-modules
+        with:
+          path: ./node_modules
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ steps.yarn-cache-key.outputs.value }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-build-
+            ${{ runner.os }}-
+
+      - run: yarn --frozen-lockfile
+        name: Install Dependencies
+
+      - run: yarn monaco-compile-check
+        name: Run Monaco Editor Checks
+
+      - run: yarn gulp editor-esm-bundle
+        name: Editor Distro & ESM Bundle