Update GitHub Actions workflow

.github/workflows/build.yml

@@ -1,15 +1,15 @@
 name: Build
 
-on: [push]
+on: push
 
 jobs:
   build:
     runs-on: ubuntu-latest
-
+    name: Build
     steps:
-    - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Set up Python 3.8
-      uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: 3.8
       - name: Install dependencies

run_unit_tests.sh

@@ -1,3 +1,8 @@
-#!/bin/sh
+#!/bin/bash
 
-python -m unittest discover tests
+# Display verbose output in CI environment.
+if [ -n "$CI" ]; then
+    OPTS=-v
+fi
+
+python -m unittest discover $OPTS tests