Mastering Spring Boot 2.0

Docker container

The Docker containers are running instances of a Docker image. Docker provides CLI commands to run, start, stop, move, or delete a container. You can set environment variables and provide configuration for the network from a container. The containers will get their own network configuration and filesystem. Each container process has its own isolated process space using kernel features that are ensured by Docker at runtime. The Docker containers use the kernel of the host operating system at runtime. They share the host kernel with other containers running on the same operating system host. Even the containers are initiated from the same Docker image and they have own specific resource allocation, such as memory and CPU.