Consider using remoteBuild: true in azure.yaml

[pamelafox]

Recent versions of azd support using remote builds, which is great since folks dont have to have Docker running locally. Here's an azure.yaml that includes the option and the azd version constraint:
https://github.com/Azure-Samples/rag-postgres-openai-python/blob/main/azure.yaml

This issue is for a: (mark with an x)

- [ ] bug report -> please search issues before submitting
- [X] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

[kfolkes]

AB#504