Add GH Action

Author: philippjfr

.github/workflows/build.yml

@@ -0,0 +1,56 @@
+name: Build
+
+on:
+  push:
+    branches: main
+  pull_request:
+    branches: '*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Install node
+      uses: actions/setup-node@v1
+      with:
+       node-version: '12.x'
+    - name: Install Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.7'
+        architecture: 'x64'
+    
+    
+    - name: Setup pip cache
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: pip-3.7-${{ hashFiles('package.json') }}
+        restore-keys: |
+          pip-3.7-
+          pip-
+
+    - name: Get yarn cache directory path
+      id: yarn-cache-dir-path
+      run: echo "::set-output name=dir::$(yarn cache dir)"
+    - name: Setup yarn cache
+      uses: actions/cache@v2
+      id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+      with:
+        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+        key: yarn-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: |
+          yarn-
+    
+    - name: Install dependencies
+      run: python -m pip install -U jupyterlab~=3.0 jupyter_packaging~=0.7.9
+    - name: Build the extension
+      run: |
+        jlpm
+        jlpm run eslint:check
+        python -m pip install .
+
+        jupyter labextension list 2>&1 | grep -ie "jupyter_bokeh.*OK"
+        python -m jupyterlab.browser_check