Use docker instances to run tests

.github/workflows/test.yml

@@ -21,14 +21,11 @@ concurrency:
 
 jobs:
   tests:
-    name: "Python ${{ matrix.python-version }} on ${{ matrix.os }}"
-    runs-on: "${{ matrix.os }}"
+    name: "Python ${{ matrix.python-version }}"
+    runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        os:
-          - ubuntu-latest
-          - macos-latest
         python-version:
           # Available versions:
           # https://github.com/actions/python-versions/blob/main/versions-manifest.json
@@ -43,15 +40,14 @@ jobs:
       - name: "Check out the repo"
         uses: "actions/checkout@v3"
 
-      - name: "Set up Python"
-        uses: "actions/setup-python@v4"
+      - name: "Run tests in Docker"
+        uses: "addnab/docker-run-action@v3"
         with:
-          python-version: "${{ matrix.python-version }}"
-
-      - name: "Install dependencies"
-        run: |
-          python3 -VV
-          python3 -m pip install -r requirements-dev.txt
-      - name: "Run tests"
-        run: |
-          make test
+          image: "python:${{ matrix.python-version }}-alpine"
+          options: --rm -v ${{ github.workspace }}:/workspace
+          run: |
+            set -o errexit
+            apk add --no-cache bash less make
+            cd /workspace
+            python3 -m pip install -r requirements-dev.txt
+            make test