Use `docker image ls` instead of `docker images` to list images

[tuxiqae]

Use the same format for all docker image commands

Standards checklist:

• [x] The PR title is descriptive.
• [x] The code compiles (cargo build)
• [x] The code passes rustfmt (cargo fmt)
• [x] The code passes clippy (cargo clippy)
• [x] The code passes tests (cargo test)
• [x] Optional: I have tested the code myself
  • [ ] I also tested that Topgrade skips the step where needed

If you developed a feature or a bug fix for someone else and you do not have the means to test it, please tag this person here.

[r-darwish]

@tuxiqae does this work for Podman as well?

[woohgit]

@tuxiqae does this work for Podman as well?

Yes it does.

[tuxiqae]

@tuxiqae does this work for Podman as well?

Yup, not only does the documentation mention this, I also tested it myself and it seems to be working perfectly well.