[aborsy]

Docker sandboxes do that. They take quite bit of resources though, almost same as a standard VM.

I need to mount directories or remove after creation easily, like I do with containers.

Gateway would be good too.

Firewall needs more functionality.

[oryx1729]

You can use micro VMs like Firecraker if you're rolling out your own infra. If you're on AWS, they also have a new managed Lambda MicroVM service.

Can you share more on what functionality you'd like from firewall? Feel free to drop me a message on [e-mail] if you'd like an early preview of my product.