What are the existing software isolation technologies?
Three major isolation technologies exist:
- Emulators
- Virtual machines
- Containers
Emulators provide the strongest isolation, at the expense of performance. Virtual machines are more efficient than emulators but can only execute software with the same CPU architecture as the host, and provide fewer isolation guarantees. Finally, containers are the most efficient solution, but with fewer guarantees on isolation, at least in theory.
What is Docker?
Docker is a set of tools that ease the management of Linux containers.
On what kind of system does Docker software run?
A Docker image can run only on a Linux operating system. Moreover, most images are build for an x86-64 processor. It is, however, possible to generate images for ARM 64 processors.
What is the difference between a Docker image and a Docker instance?
A Docker...