Update Dockerfile

Dockerfile

@@ -1,13 +1,27 @@
 FROM python:3.9-slim
 
+# Create a non-root user and set permissions
+RUN useradd -m appuser && mkdir -p /app && chown appuser:appuser /app
+
+# Switch to the non-root user
+USER appuser
+
+# Set the working directory
 WORKDIR /app
-COPY requirements.txt .
-RUN pip install -r requirements.txt
 
-COPY . .
+# Copy requirements and install dependencies
+COPY --chown=appuser:appuser requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
 
-ENV FLASK_APP=manage.py
+# Copy the application code
+COPY --chown=appuser:appuser . .
+
+# Set environment variables
+ENV FLASK_APP=app.py
 ENV FLASK_ENV=production
 
+# Expose the port
 EXPOSE 5000
+
+# Run the application
 CMD ["gunicorn", "--bind", "0.0.0.0:5000", "--workers", "4", "app:create_app()"]