Update CI

.github/workflows/linuxci.yml

@@ -17,6 +17,10 @@ jobs:
           architecture: x64
     - name: Python environment report
       run: python -c "import sys; print(sys.version)"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
     - name: flake8 Lint
       uses: py-actions/flake8@v2
       with: