Dockerfile fixed

Dockerfile

@@ -1,21 +1,31 @@
-# Stage 1: Build the Flask Application
+# ------------------- Stage 1: Build Stage ------------------------
 FROM python:3.9 AS backend-builder
 
+# Set the working directory to /app
 WORKDIR /app
 
-COPY backend/requirements.txt ./
+# Copy the contents of the backend directory into the container at /app
+COPY backend/ .
+
+# Install dependencies specified in requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY backend/ .
+# ------------------- Stage 2: Final Stage ------------------------
 
-# Stage 2: Final Image
-FROM python:3.9-slim-buster
+# Use a slim Python 3.9 image as the final base image
+FROM python:3.9-slim
 
+# Set the working directory to /app
 WORKDIR /app
 
+# Copy the built dependencies from the backend-builder stage
+COPY --from=backend-builder /usr/local/lib/python3.9/site-packages/ /usr/local/lib/python3.9/site-packages/
+
+# Copy the application code from the backend-builder stage
 COPY --from=backend-builder /app /app
 
+# Expose port 5000 for the Flask application
 EXPOSE 5000
 
+# Define the default command to run the application
 CMD ["python", "app.py"]
-