Add CI testing on GitHub Actions.

.github/workflows/build-test.yaml

@@ -0,0 +1,29 @@
+name: Build and test python-libssh
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    - cron: '38 4 5 * *'
+
+jobs:
+  build:
+    name: Run tests in container
+    runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ fedora-33 ]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set the right OS in the Dockerfile
+        run: sed -i "s#^FROM.*#FROM $( echo ${{ matrix.os }} | sed 's#^fedora-#registry.fedoraproject.org/fedora:#' )#" tests/Dockerfile
+      - name: Build image
+        run: docker build -t python-libssh -f tests/Dockerfile .
+      - name: Run container
+        run: docker run --name python-libssh --rm -d python-libssh
+      - name: Run tests in the container
+        run: docker exec python-libssh python3 setup.py test
+      - name: Run tests with installed rpm
+        run: docker exec python-libssh bash -c 'cp -rp tests /tmp/tests && cd /tmp/tests && for i in *.py ; do python3 $i ; done'