update docker

backend/Dockerfile

@@ -2,23 +2,18 @@
 # Use the official Python 3.11.5 image
 FROM python:3.11.5
 
-EXPOSE 7860
-
-# Prevents Python from generating .pyc files and turns off buffering
-ENV PYTHONDONTWRITEBYTECODE=1
-ENV PYTHONUNBUFFERED=1
-
 # Set the working directory inside the container
 WORKDIR /app
 
-# Copy only the requirements file first (better for caching)
+# Copy requirements and install dependencies
 COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
 
-# Install dependencies
-RUN python -m pip install --no-cache-dir -r requirements.txt
+# Copy the backend code into the container
+COPY . /app
 
-# Copy the rest of the application code
-COPY . .
+# Expose port 7860 for FastAPI
+EXPOSE 7860
 
-# Run the FastAPI app with Gunicorn
+# Run FastAPI using Uvicorn
 CMD ["gunicorn", "--bind", "0.0.0.0:7860", "-k", "uvicorn.workers.UvicornWorker", "main:app"]