This tutorial is contributed by Hatef Monajemi (@monajemi)

The following tutorial is intended to familiarize you with building docker images and using them.

Table of Contents

• What is Docker
• How to build a docker image
• Using Docker

What is Docker

How to build a Docker image

Using Docker

• To see a list of your local docker images:

  docker images 
  

• To get into a docker image (say riccardomurri/elasticluster) that may have a different entrypoint that bash

  docker run -it --entrypoint /bin/bash riccardomurri/elasticluster
  

• To see a list of your containers:

  docker ps -a 
  

• To reattach your exited container:

  docker start  <IMAGE_ID>
  docker attach <IMAGE_ID>
  

  or simply,

  docker start -a -i <IMAGE_ID>
  

  This is a great command to remember, since you may exit your terminal, but this command allows you to start the exited containers and attach to the terminal again.

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