install pytest in docker image for ci testing

Author: codewitching

Dockerfile

@@ -1,17 +1,12 @@
-# Step 1: Use official Python image
 FROM python:3.12-slim
 
-# Step 2: Set working directory inside container
 WORKDIR /app
 
-# Step 3: Copy all project files into the container
 COPY . .
 
-# Step 4: Install Python dependencies
-RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt \
+    && pip install pytest
 
-# Step 5: Expose port Flask will run on
-EXPOSE 5000
+ENV PYTHONPATH=/app
 
-# Step 6: Run the Flask app
-CMD ["python", "app.py"]
+CMD ["python", "app.py"]