Migrate from Travis CI to GitHub Actions

.github/workflows/main.yml

@@ -0,0 +1,40 @@
+on: [push]
+
+permissions:
+  contents: read
+
+jobs:
+  tox:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v4
+      with:
+        python-version: "3.10"
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox codecov
+        pip install -r requirements.txt
+
+    - name: Unit tests
+      run: |
+        tox -e py
+
+    - name: Upload Coverage to Codecov
+      uses: codecov/codecov-action@v3
+
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Build Docker image
+      uses: docker/build-push-action@v3