feat: add compose pull command support

[skharchikov]

Summary

While rewriting shell scripts to a Rust TUI, I was using docker-wrapper and encountered the need for a compose pull command.

• Add ComposePullCommand with builder pattern matching existing compose commands
• Support all docker compose pull flags: --ignore-buildable, --ignore-pull-failures, --include-deps, --policy, --quiet
• Add PullPolicy enum (Always, Missing) for type-safe policy selection
• Target specific services or pull all services at once

Reference: Docker Compose Pull docs

[joshrotenberg]

Nice, thanks for this!

One thing to address before merging: there's already a PullPolicy enum defined in
src/command/compose/create.rs (and up.rs) with three variants (Always, Never, Missing). The
new one in pull.rs defines a second PullPolicy with only Always and Missing.

Could you reuse the existing PullPolicy from create.rs instead of defining a new one? Maybe it makes sense to move it up to the top level compose.rs since its used in > 1 place now ...

[skharchikov]

One thing to address before merging: there's already a PullPolicy enum defined in src/command/compose/create.rs (and up.rs) with three variants (Always, Never, Missing).

I decided introduce a new one because according to the doc it has only 2 options: Always | Missing. It doesn't support Never.
I was thinking to name it PullPullPolicy, but it looks odd

[skharchikov]

@joshrotenberg wdyt would be the best option to proceed around PullPolicy enum?

[joshrotenberg]

Fair point -- you're right that pull only supports Always and Missing, so reusing the 3-variant enum would be a bit misleading. Let's keep them separate. Maybe just name it ComposePullPolicy to avoid confusion with the existing PullPolicy?

[skharchikov]

Fair point -- you're right that pull only supports Always and Missing, so reusing the 3-variant enum would be a bit misleading. Let's keep them separate. Maybe just name it ComposePullPolicy to avoid confusion with the existing PullPolicy?

fixed

[joshrotenberg]

Merged, 0.11.1 is running now. Thanks again!