Change exposed fqdn to ingress's fqdn

[lonegunmanb]

Describe your changes

According to the document:

It seems like we'd better to output the ingress's fqdn as container app's access endpoint.

Issue number

000

Checklist before requesting a review

• [ ] The pr title can be used to describe what this pr did in CHANGELOG.md file
• [ ] I have executed pre-commit on my machine
• [ ] I have passed pr-check on my machine

Thanks for your cooperation!