User guide - Mounting volumes, secrets, and configmaps

[l0rd]

Is your enhancement related to a problem? Please describe

User Guide needs to be updated (global issue). This issue is about the creation of a new "Mounting volumes, secrets and configmap" section.

Describe the solution you'd like

This is about getting the content from:

• former user guide / using developer workspaces / mounting a secret as a file
• former user guide "Authenticating users on private repositories of SCM servers"
• DevWorkspace operator automount doc
  and adapt/merge it together.

If that's not cover yet we should also talk about how a user can specify its container registries credentials.

[max-cx]

@l0rd, can you please clarify what the second bullet point here, former user guide "Authenticating users on private repositories of SCM servers", is in the user guide of the old docs:

Is it
(A) https://www.eclipse.org/che/docs/che-7/end-user-guide/authenticating-on-scm-server-with-a-personal-access-token/
or
(B) https://www.eclipse.org/che/docs/che-7/end-user-guide/mounting-a-secret-as-a-file-or-an-environment-variable-into-a-workspace-container/#mounting-a-git-credential-store-into-a-workspace-container_che
or
(C) something else (and if so, then what it is)
?

BTW, I've opened a PR on a similar topic, but that's for the Admin Guide: eclipse-che/che-docs#2271

[l0rd]

My second bullet point is about (A)
(B) instead is part of the article that I refer in my first bullet point

[dkwon17]

Hello @amisevsk , sorry, I already made a PR to update (B) that I've tested and verified myself: eclipse-che/che-docs#2275 since I thought (B) was also a part of #21298

If you were already working on it, I can close my PR.