update dockerfile

Dockerfile

@@ -1,18 +1,26 @@
+# Use the official Python image as the base image
 FROM python:3.10
 
+# Set the working directory
 WORKDIR /app
 
-COPY requirements.txt .
+# Create a virtual environment
+RUN python -m venv venv
 
-RUN pip install --no-cache-dir virtualenv
-RUN virtualenv venv
+# Activate the virtual environment
+SHELL ["venv/bin/activate"]
 
-ENV PATH="/app/venv/bin:$PATH"
+# Update pip to the latest version
+RUN pip install --no-cache-dir --upgrade pip
 
+# Copy the requirements file and install dependencies
+COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Copy the rest of your Django application code
 COPY . .
 
+# Start your Django application as usual
 EXPOSE $PORT
 
 CMD gunicorn squib.wsgi:application --workers=4 --bind 0.0.0.0:$PORT