feat(image): pass global context to docker/podman image save func

[derekhjray]

Description

Passing global context to docker/podman image save function to ensure timeout from cmdline works for image save, otherwise, scanning operation cannot be interrupted by '--timeout' arg if large image using too much time to save image

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[github-actions]

📊 API Changes Detected

Semver impact: major

github.com/aquasecurity/trivy/pkg/fanal/image/daemon
  Incompatible changes:
  - DockerImage: changed from func(github.com/google/go-containerregistry/pkg/name.Reference, string) (Image, func(), error) to func(context.Context, github.com/google/go-containerregistry/pkg/name.Reference, string) (Image, func(), error)
  - PodmanImage: changed from func(string, string) (Image, func(), error) to func(context.Context, string, string) (Image, func(), error)

[DmitriyLewen]

You can use t.Context()

Suggested change

	_, cleanup, err := DockerImage(context.Background(), ref, "")
	_, cleanup, err := DockerImage(t.Context(), ref, "")

[DmitriyLewen]

same for other test files

[DmitriyLewen]

@derekhjray Thanks for your contribution!
Can you fix linter errors?

[derekhjray]

@derekhjray Thanks for your contribution! Can you fix linter errors?

I've fixed linter issues as recommended

[DmitriyLewen]

Can you fix linter error? (https://github.com/aquasecurity/trivy/actions/runs/19021308917/job/54316836880?pr=9733#step:5:38)

[derekhjray]

Can you fix linter error? (https://github.com/aquasecurity/trivy/actions/runs/19021308917/job/54316836880?pr=9733#step:5:38)

fixed

[knqyf263]

LGTM