first attempt: use gh actions for unit tests

.github/workflows/unittest.yml

@@ -0,0 +1,30 @@
+name: Scala CI
+
+on:
+  push:
+    branches: [ develop ]
+  pull_request:
+    branches: [ develop ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Run tests
+      env:
+        AGORA_URL_ROOT:  http://localhost:8989
+        RAWLS_URL_ROOT: http://localhost:8990
+        THURLOE_URL_ROOT: http://localhost:8991
+        FIRE_CLOUD_ID: 123
+      run: sbt coverage test coverageReport
+    - name: Coveralls
+      run: sbt coveralls
+
+