gh: add server workflow

.github/workflows/test_server.yml

@@ -0,0 +1,68 @@
+name: Unittests
+
+on:
+  pull_request:
+    paths-ignore:
+      - 'www/**'
+  push:
+    paths-ignore:
+      - 'www/**'
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.x
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.11
+    - uses: Gr1N/setup-poetry@v8
+    - name: Cache Python requirements
+      uses: actions/cache@v2
+      id: cache-pip
+      with:
+        path: ~/.cache/pypoetry/virtualenvs
+        key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
+        restore-keys: |
+          - ${{ runner.os }}-poetry-
+    - name: Install tests dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y portaudio19-dev build-essential
+    - name: Install requirements
+      run: |
+        cd server
+        poetry install
+    - name: Tests
+      run: |
+        cd server
+        poetry run python -m pytest -v tests
+
+  pep8:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.x
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.11
+    - name: Validate formatting
+      run: |
+        pip install black
+        cd server
+        black --check reflector tests
+
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+    - name: Build and push
+      id: docker_build
+      uses: docker/build-push-action@v4
+      with:
+        context: server