Update dockerd command line ref

[robmry]

- What I did

Updated the dockerd command line option reference (for https://docs.docker.com/reference/cli/dockerd/).

- How I did it

Pasted in current --help output, fixed up some paths.

• first commit syncs things that haven't been updated for a while (can just drop if it's contentious)
• second commit relates to Mark default-bridge-only opts in --help and manpage moby/moby#49522

- How to verify it

- Human readable description for the release notes

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.27%. Comparing base (656523e) to head (4e7497e).
Report is 11 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5865   +/-   ##
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  Coverage   59.27%   59.27%           
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  Files         353      353           
  Lines       29694    29694           
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  Hits        17601    17601           
  Misses      11113    11113           
  Partials      980      980           

[vvoland]

Oh actually, didn't we move it back to moby/moby?

moby/moby#48298

EDIT: So this is actually different, but thinking if we could share the flags description between these 🤔

[thaJeztah]

Oh actually, didn't we move it back to moby/moby?

We moved the man page, but not yet the reference docs; ultimately we should move these as well (also for the daemon.json), and ideally generate yamldocs with the cli-docs-tool code (instead of the copy/paste usage output).

So we're "half-way there" 🙈

[thaJeztah]

Some minor nits to consider, but not a strict blocker (some bits we should consider updating in actual code probably)

[thaJeztah]

This one we may have manually kept as list and/or removed the "default" (as the default is determined dynamically; we should probably look at the --help output as well to consider if we want to show (default []). I recall I once started on a PR to show the actual DNS we'd be using as default to /info in moby/moby#35506, but that one may have been wrong in the systemd-resolvd case (to be checked)

[thaJeztah]

This may have been a case where we also removed the default for the docs (and possibly should consider doing so for the CLI, as (default map[]) may not say much for the user.

[thaJeztah]

Perhaps one we should consider updating in code as well; I suspect we removed Docker to move away from "Docker registry", as it's an OCI registry, but we should update it to indicate that mirror is only for Docker Hub currently 🤔

[robmry]

Some minor nits to consider, but not a strict blocker (some bits we should consider updating in actual code probably)

Thank you - I've updated those ... only the change for --seccomp-profile is left in the first commit.

[thaJeztah]

LGTM, thanks!