Docker – 3 Different Ways to Create Images

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This article represents 3 different ways using which one could create a Docker image. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos.
In the command below, hub-user is the name of your user account on http://hub.docker.com, repo-name is the repository name that you create and tag is the name you assign to specific image (e.g., dev, testing etc). Following are the different ways:

  • docker build -t <hub-user>/<repo-name>[:<tag>] -t <dockerfile> .
  • docker tag <existing-image> <hub-user>/<repo-name>[:<tag>]. The “existing-image” uis the name of image which already exists in your local repository.
  • docker commit <exiting-container> <hub-user>/<repo-name>[:<tag>]. This command is handy when you have built a container as you go and later wanted to build an image based on this container.
Ajitesh Kumar

Ajitesh Kumar

Ajitesh is passionate about various different technologies including programming languages such as Java/JEE, Javascript, PHP, .NET, C/C++, mobile programming languages etc and, computing fundamentals such as application security, cloud computing, API, mobile apps, google glass, big data etc.Recently, he has been digging deep into the field of data science and machine learning.

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Ajitesh Kumar

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