Is there Dockerfile format or example in RHEL man page or elsewhere in an OS install?

[Ken_McDonald]

Can I find Dockerfile format structure (keywords, examples, etc) in a standalone RHEL OS installation? So that during a certification test I could lookup the format if I forget something. I know many OS commands have stuff like "man 5 command" to get their config file structure details, but I cannot seem to find anything like that for a Dockerfile or Containerfile

[Fran_Garcia · Accepted solution]

This is valid for any type of file you might need, so take your peek

# yum provides "**/Dockerfile"

# yum install buildah-tests  (for example)

[Ken_McDonald]

Thanks @Fran_Garcia !!! That is exactly the kind of info I needed. Never really thought to globally search the repositories for example files. That'll help a lot in case I forget a keyword or syntax in a closed-off cert test lab environment

[flozano]

AFAIK RHEL8 man pages provide no example and no explanation of the syntax of Dockerfile, just like RHEL8 gcc package provides no tutorial on the C programming language.

But you can find a few examples of Dockerfiles and recommended practices in the "Building, running, and managing containers" guide from RHEL8 at

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/building_runnin...