Update dockerfile

dockerfile

@@ -1,7 +1,7 @@
 # Use Python 3.9 slim
 FROM python:3.9-slim
 
-# Install system dependencies in a single RUN layer
+# Install system dependencies
 RUN apt-get update && apt-get install -y \
     wget \
     gnupg \
@@ -29,7 +29,7 @@ RUN apt-get update && apt-get install -y \
     && apt-get install -y google-chrome-stable \
     && rm -rf /var/lib/apt/lists/*
 
-# Install matching ChromeDriver version
+# Install ChromeDriver (specific matching version)
 RUN CHROME_MAJOR_VERSION=$(google-chrome-stable --version | awk '{print $3}' | cut -d'.' -f1) \
     && CHROMEDRIVER_VERSION=$(wget -qO- https://chromedriver.storage.googleapis.com/LATEST_RELEASE_$CHROME_MAJOR_VERSION) \
     && wget -O /tmp/chromedriver.zip https://chromedriver.storage.googleapis.com/$CHROMEDRIVER_VERSION/chromedriver_linux64.zip \
@@ -37,18 +37,13 @@ RUN CHROME_MAJOR_VERSION=$(google-chrome-stable --version | awk '{print $3}' | c
     && chmod +x /usr/bin/chromedriver \
     && rm /tmp/chromedriver.zip
 
-# Set up app directory
 WORKDIR /app
 
-# Copy requirements and install
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy app
 COPY app.py .
 
-# Set environment variable for port
 ENV PORT=7860
 
-# Run the app
 CMD ["python", "app.py"]