Process task structure between Docker and Host

Question

How the process task structure is different in both docker and the host process any specific module is differed in docker apart from host?

Answer 1

Since processed are represented in kernel by structure called ‘task_struct', that structure is the same in a container.

A container is based on system calls to the host kernel, and any kernel-related structure comes directly from said kernel.

See "Architecting Containers: Why Understanding User Space vs. Kernel Space Matters"

A typical program gets access to resources in the kernel through layers of abstraction similar to the following diagram:

The kernel provides abstraction for security, hardware, and internal data structures. The open() system call is commonly used to get a file handle

Notice in the following drawing that bash makes a getpid() call which requests its own process identity.
Also, notice that the cat command requests access to /etc/hosts with a file open() call.