operations.docker: add compose, login/logout, and build operations

[wowi42]

Summary

• Adds three new docker operations in one place, since they share design (flag assembly, DockerImage/DockerAuths-based idempotency) and it's easier to review together.
• docker.compose: run docker compose up -d / down against an on-host compose file, with support for --project-name, --pull, --build, --force-recreate, --remove-orphans, and -v. Not idempotent from pyinfra's side; Docker's own layer/state handling keeps re-runs cheap.
• docker.login / docker.logout: idempotent registry auth. Checks ${DOCKER_CONFIG:-~/.docker}/config.json via a new DockerAuths fact; login pipes the password to --password-stdin and masks it in logs.
• docker.build: wraps docker build (or docker buildx build via builder=). Supports tags, dockerfile, build_args, labels, target, platform, network, cache_from, secrets, pull, no_cache, and tag-based idempotency (no-op when every declared tag already exists locally, unless force=True).

Supersedes #1674 and #1673.

• Pull request is based on the default branch (3.x at this time)
• Pull request includes tests for any new/updated operations/facts
• Pull request includes documentation for any new/updated operations/facts
• Tests pass (see scripts/dev-test.sh)
• Type checking & code style passes (see scripts/dev-lint.sh)

[DonDebonair]

I honestly disagree that adding all 3 (compose, login/logout, build) in 1 PR makes it easier to review. I might be dumb, but I like focused PRs that are as small as possible so the context is manageable.

Could you split it into 3 PR @wowi42 ?

I love the additions btw!

[wowi42]

Split this PR into three focused PRs, each freshly based on current 3.x:

• operations.docker: add compose operation #1693 — operations.docker: add compose operation
• operations.docker: add login/logout operations #1694 — operations.docker: add login/logout operations
• operations.docker: add build operation #1695 — operations.docker: add build operation

Happy to close this one in favour of the three above — let me know if you'd prefer to keep it open for context.