docs: update link to docker build reference

[dvdksn]

Update link to the docker build CLI reference

• Relates to Canonical CLI / moby 25 docs#19045
• Relates to docs: rename reference docs to "object_action" cli#4755

[dvdksn]

I marked as do not merge but actually it should be fine to merge. It depends on the moby 25 release, but that's not a blocker for merging

edit: hmm on the other hand, merging would cause the docs validation CI failure to appear everywhere so maybe let's hold until moby 25

[crazy-max]

Oh I thought it would be image/build, not image_build?

[dvdksn]

it will be. I am not moving all the pages yet. First step is to get rid of the duplicates (aliases) and only keep the canonical files.

[dvdksn]

@crazy-max rebased, this should be good to go

[crazy-max]

@dvdksn Looks like there is an issue with docs workflow: https://github.com/docker/buildx/actions/runs/7585104346/job/20660277217?pr=2186#step:6:489

#27 [validate-upstream 5/5] RUN htmltest
#27 0.053 htmltest started at 02:32:51 on public
#27 0.053 ========================================================================
#27 4.262 engine/reference/commandline/buildx_build/index.html
#27 4.262   hash does not exist --- engine/reference/commandline/buildx_build/index.html --> /engine/reference/commandline/image_build/#build-arg
#27 4.262 ========================================================================
#27 10.11 ✘✘✘ failed in 10.052181108s
#27 10.11 1 errors in 2120 documents
#27 10.11 
#27 ERROR: process "/bin/sh -c htmltest" did not complete successfully: exit code: 1

I guess it needs changes first from docs repo?

[dvdksn]

Yes this is expected, chicken and egg problem. I am renaming the page, but this file contains a link to the old page url...