Docker vs Virtualenv: Which is More Secure?

What are the security differences between Docker and Virtualenv?

Docker containers are isolated environments that share the host OS kernel, while Virtualenv creates isolated Python environments. Docker can be more secure due to its containerization, but it also introduces risks if not configured properly.

Can you explain how Docker's isolation works?

Docker uses namespaces and control groups (cgroups) to provide isolation. Namespaces ensure that each container has its own view of the system, while cgroups limit the resources each container can use.

Are there any specific security best practices for using Docker?

Yes, some best practices include using official images, regularly updating images, scanning for vulnerabilities, and running containers with the least privileges necessary.

How does Virtualenv handle security?

Virtualenv primarily isolates Python dependencies, but it doesn't provide the same level of system-level isolation as Docker. Security relies more on the underlying system and Python package management.