[ECR] [request]: Support for Docker Hardened Images on Enhanced Vulnerability Scanning - Inspector

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**Tell us about your request**
I want us AWS Inspector Vulnerability Scans with for Docker Hardened Images

**Which service(s) is this request for?**
ECR

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
I have built my docker images based on docker hardened images. To be more specific, this one:

dhi.io/amazoncorretto:21-alpine3.22

But when uploading this to the ECR I see this nice little image:

It would be very nice to be able to scan images from dhi.io

**Are you currently working around this issue?**
Yes, we are using Trivy, even though it is not the official tool we use for container scanning. Would be a lot better to use Inspector

**Additional context**
I could not find any other issue for this, which surprised me a bit.

Start by reviewing the request for AWS Inspector scanning of Docker Hardened Images, specifically the dhi.io/amazoncorretto:21-alpine3.22 example and the linked image. Define done as ECR images sourced from dhi.io being supported by Enhanced Vulnerability Scanning, with validation against the current Trivy workaround.

Written by the indexing model from the issue text.