Images and Containers


Docker images : a read-only template composed of layered file system used to share common files and create Docker container instances

Docker container : an isolated and secured shipping container created from an image that can be run, started, stopped, moved and deleted

The Example

Docker images : Ubuntu with Nodejs installed and application source code

Docker container : created by using an image RUNs your application

Key Command

  • docker pull [image name]
  • docker run [image name]
  • docker images
  • docker ps
  • docker ps -a
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