Merge #6393: docs: mention building for some HOSTs only in release-process.md

87c31ad67a Update doc/release-process.md (UdjinM6)
55d74630b4 docs: mention building for some HOSTs only in `release-process.md` (UdjinM6)

Pull request description:

  ## Issue being fixed or feature implemented
  https://github.com/dashpay/guix.sigs/pull/73

  #6390 follow-up

  ## What was done?

  ## How Has This Been Tested?

  ## Breaking Changes

  ## Checklist:
  - [ ] I have performed a self-review of my own code
  - [ ] I have commented my code, particularly in hard-to-understand areas
  - [ ] I have added or updated relevant unit/integration/functional/e2e tests
  - [ ] I have made corresponding changes to the documentation
  - [ ] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_

Top commit has no ACKs.

Tree-SHA512: b4a2cadf5899a8aea6612b4ff9c0e9f9c530a9e2344eb090967fbcf9a2ab219aff02f11f86434e4082f84c401d578cf2d033b6838c94705f532beca4ab604986

doc/release-process.md

@@ -97,6 +97,8 @@ Follow the relevant Guix README.md sections:
 - [Building](/contrib/guix/README.md#building)
 - [Attesting to build outputs](/contrib/guix/README.md#attesting-to-build-outputs)
 
+_Note: we ship releases for only some supported HOSTs so consider providing limited `HOSTS` variable or run `./contrib/containers/guix/scripts/guix-start` instead of `./contrib/guix/guix-build` when building binaries for quicker builds that exclude the supported but not shipped HOSTs_
+
 ### Verify other builders' signatures to your own. (Optional)
 
 Add other builders keys to your gpg keyring, and/or refresh keys: See `../dash/contrib/builder-keys/README.md`.