Doc: Fix terminology: "Base image" vs. "Parent Image"

[michael-holzheu]

From the documentation of Base image:

Definition of: base image

An image that has no parent is a base image.

From the documentation of Dockerfile:

Docker runs instructions in a Dockerfile in order. The first instruction must be FROM in order to specify the Base Image from which you are building.

Since the image that is specified via FROM can already be a derived image, it is probably better to say:

Docker runs instructions in a Dockerfile in order. The first instruction must be FROM in order to specify the parent image from which you are building.

Besides this, there are multiple other occurrences of the term "base image" that should be checked.

And also check the following broken link that is used in https://docs.docker.com/engine/reference/builder as link for "Base Image": https://docs.docker.com/engine/reference/glossary/#base-image

[surajnarwade]

@londoncalling this is nice catch, I am claiming this

[surajnarwade]

@michael-holzheu , I am not able to find a file regarding dockerfile reference in repo, can you point me towards that ?
cc @londoncalling

[michael-holzheu]

@michael-holzheu , I am not able to find a file regarding dockerfile reference in repo, can you point me towards that ?

Not sure what you mean with "file". I just referred to the web pages.

[surajnarwade]

@michael-holzheu , file as in markdown file for that page in repo

[michael-holzheu]

@michael-holzheu , file as in markdown file for that page in repo

So your question is "where is the markdown file for https://docs.docker.com/engine/reference/builder", right?
I checked out https://github.com/docker/docker.github.io but couldn't not find the markdown file either.

[michael-holzheu]

I think it is in the docker repository: https://github.com/moby/moby/blob/master/docs/reference/builder.md

[londoncalling]

@surajnarwade were you able to find this file per @michael-holzheu 's comment ^^? You'll need to clone the https://github.com/moby/moby/ repository for this one, since some reference files live with the codebase, but the process for creating the PR and making updates is the same.

[surajnarwade]

@londoncalling sure, I will do that

[johndmulhausen]

Note: Please do not link to /engine/reference/glossary/ anywhere.

[AliBayatGH]

Both image types allow us to create a reusable image. However, base images allow us more control over the contents of the final image.

[Coder0-0]

Thank you for sharing!! @michael-holzheu