Docker Desktop 4.13 and sqlpackage with linux image

The current version of Docker Desktop is 4.18.0. Is there a reason why you are using an older version?

It doesn’t look like an actual Dockerfile. There are no instructions except FROM.

I don’t use Windows containers so I can’t help you with this problem, but I added code blocks to your post possibly incorrectly. Please format your post properly next time so we don’t have to guess how it should be interpreted (like the Dockerfile)