Predefine output file for media

[atanasdinov]

• Customising images now accepts the user provided --output value or the generated image-<timestamp>.<type> one
• Validates that --mode option can only be embedded or split

[dirkmueller]

maybe update https://github.com/SUSE/elemental/blob/main/internal/cli/cmd/customize.go#L63 also?

[atanasdinov]

This line references how the default output would look and it's correct.

[dirkmueller]

This line references how the default output would look and it's correct.

well, it seemed to me we supported both a directory and a full filename here before, that's why I was wondering.

[atanasdinov]

Nope, I believe even if it had happened before, it must have been a side effect. The --output flag is always path to a file, never a directory. Also referenced in the description:

Usage: "Filepath for the output image",

[dirkmueller]

Usage: "Filepath for the output image",

okay, I read that as file/path.