Fix Docker permission issues

- Switch to root user for package installation
- Use python3 explicitly instead of python
- Switch back to chrome user for security
- Should resolve apk permission denied errors

Dockerfile

@@ -1,5 +1,8 @@
 FROM zenika/alpine-chrome:with-playwright
 
+# Switch to root user to install packages
+USER root
+
 WORKDIR /app
 
 # Install Python and pip
@@ -7,15 +10,18 @@ RUN apk add --no-cache python3 py3-pip
 
 # Copy requirements first for better caching
 COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
+RUN python3 -m pip install --no-cache-dir -r requirements.txt
 
 # Copy your code
 COPY . .
 
+# Switch back to chrome user for security
+USER chrome
+
 # FastAPI and Uvicorn are already installed via requirements.txt
 # Playwright browsers are already available in the base image
 
 EXPOSE 7860
 
 # Run the FastAPI application
-CMD ["python", "-m", "uvicorn", "scrape:app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["python3", "-m", "uvicorn", "scrape:app", "--host", "0.0.0.0", "--port", "7860"]