Scenario: You SSH into an Ubuntu server. How do you know if you just logged in inside a docker container, or just a regular VM?
Turns out there are no straight answers.
Docker provides virtualization based on Linux Containers (LXC). LXC is a technology to provide operating system virtualization for processes on Linux. This means, that processes can be executed in isolation without starting a real and heavy virtual machine. All processes will be executed on the same Linux kernel, but will still have their own namespaces, users and file system.
