Refactor GitHub Actions workflows to use Dockerfiles from the new 'docker' directory and add a new workflow for running tests across multiple Python versions.

.github/workflows/tests.yml

@@ -0,0 +1,44 @@
+name: Run Tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+
+    steps:
+    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8  # v5.0.0
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c  # v6.0.0
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -e .
+
+    - name: Run tests
+      run: |
+        cd tests
+        chmod +x run_tests.sh
+        timeout 120 ./run_tests.sh
+
+    - name: Upload test logs on failure
+      if: failure()
+      uses: actions/upload-artifact@v4
+      with:
+        name: test-logs-python-${{ matrix.python-version }}
+        path: tests/node.log