Copying a bundle with the image-is-bundle-check being false now directs user to use correct flag.

[ashpect]

This solves #544 and #559.

Initial Issue

The command

imgpkg pull -b index.docker.io/<user>/<repo>:<tag> --image-is-bundle-check=false -o <location>

successfully runs and will pull it as an image, which is a bit weird because we are trying to pull a bundle using the bundle flag.

Initial Fix

Now running the command throws this error

imgpkg: Error: Expected image flag when wanting to pull a bundle as OCI image (hint: Use -i instead of -b)

Analysis

As seen from the picture , the case when we pass a image link along with the -I flag and the —image-is-bundle-check flag=true also gets passed by and the image is pulled.

What steps did I take ?

• Removed some redundant variable checking
• Added checks for both the cases and printed error for the user.