Integrate github actions. (#1219)

* Migrate CI to github actions.

* Add NO_CLIENT env for test suite.

* Map postgres port to localhost.

.github/workflows/build.yml

@@ -0,0 +1,59 @@
+name: Build
+on: [push]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_USER: commonwealth
+          POSTGRES_DB: commonwealth
+          POSTGRES_PASSWORD: edgeware
+        # Set health checks to wait until postgres has started
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          # Maps tcp port 5432 on service container to the host
+          - 5432:5432
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Setup Node
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14.x
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - 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: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Install dependencies
+        run: yarn
+
+      - name: Run tests
+        run: yarn test-suite
+        env:
+          NO_CLIENT: true
+
+      - name: Archive code coverage results
+        uses: actions/upload-artifact@v2
+        with:
+          name: code-coverage-report
+          path: coverage