pack inspect <app-image> shows if the image is rebasable or not

[dlion]

Summary

Now pack inspect <image> shows a Rebasable label on the inspect output based on the reabasability of the image if the label has been set or if it is true

Rebasable: true if it's rebasable, Rebasable: false if it's not.

It works either for local or remote images

Output

Before Remote output

REMOTE:

Stack: test.stack.id.remote

Base Image:
  Reference: some-remote-run-image-reference
  Top Layer: some-remote-top-layer

Run Images:
  user-configured-mirror-for-remote        (user-configured)
  some-remote-run-image
  some-remote-mirror
  other-remote-mirror

Buildpacks:
  ID                          VERSION        HOMEPAGE
  test.bp.one.remote          1.0.0          https://some-homepage-one
  test.bp.two.remote          2.0.0          https://some-homepage-two
  test.bp.three.remote        3.0.0          -

Processes:
  TYPE                              SHELL        COMMAND                      ARGS                     WORK DIR
  some-remote-type (default)        bash         /some/remote command         some remote args         /some-test-work-dir
  other-remote-type                              /other/remote/command        other remote args        /other-test-work-dir

After remote output with rebasable label set to true

Stack: test.stack.id.remote

Base Image:
  Reference: some-remote-run-image-reference
  Top Layer: some-remote-top-layer

Run Images:
  user-configured-mirror-for-remote        (user-configured)
  some-remote-run-image
  some-remote-mirror
  other-remote-mirror

Rebasable: true

Buildpacks:
  ID                          VERSION        HOMEPAGE
  test.bp.one.remote          1.0.0          https://some-homepage-one
  test.bp.two.remote          2.0.0          https://some-homepage-two
  test.bp.three.remote        3.0.0          -

Processes:
  TYPE                              SHELL        COMMAND                      ARGS                     WORK DIR
  some-remote-type (default)        bash         /some/remote command         some remote args         /some-test-work-dir
  other-remote-type                              /other/remote/command        other remote args        /other-test-work-dir

Documentation - WIP

• Should this change be documented?
  • Yes, see Add Rebasable label small description and updated inspect-image outputs docs#592
  • No

Related

Resolves #1799

[natalieparellano]

@dlion is it possible you could fix the merge conflicts on this one?

[natalieparellano]

Looks good to me. Thanks for the PR @dlion!