Docker

Why Docker

• Docker enables you to separate your applications from your infrastructure so you can deliver software quickly.

Concepts

• Container

  • is a runnable instance of an image. You can create, start, stop, move, or delete a container using the DockerAPI or CLI.
  • can be run on local machines, virtual machines or deployed to the cloud.
  • is portable (can be run on any OS).
  • is isolated from other containers and runs its own software, binaries, and configurations.

• Image

• The image contains the container’s filesystem, it must contain everything needed to run an application

Dockerfile

• A Dockerfile contains a script of instructions that Docker uses to create a container image.