Added github workflows to make sure application is able to build itse…

…lf properly

.github/workflows/flask.yaml

@@ -0,0 +1,36 @@
+name: Flask App Test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.8'
+
+    - name: Install dependencies
+      working-directory: e-invoice/e_invoice
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+
+    - name: Run Flask app
+      working-directory: e-invoice/e_invoice
+      run: |
+        nohup flask run & # Start Flask application in the background
+
+    - name: Test /login route
+      run: |
+        sleep 10 # Wait for the server to start
+        curl -s --head http://127.0.0.1:5000/login | head -n 10 # Check if /login returns HTML
+
+    - name: Stop Flask app
+      run: |
+        pkill -f 'flask run' # Stop the Flask app