Move Local Docker Setup to a deployment guide

[kmcginnes]

Description

Move the "Local Docker Setup" section from docs/getting-started/README.md into a new deployment guide at docs/guides/deploy-with-docker.md.

• Created docs/guides/deploy-with-docker.md with the content from the getting-started page, structured to match the other deployment guides (back-link, top-level headings, relative links)
• Removed the Local Docker Setup section from docs/getting-started/README.md
• Added the new guide to the Deployment section in docs/guides/README.md
• Updated the root README.md link to point to the new location

Validation

Documentation-only change. Verify that all links resolve correctly and the new guide renders properly.

Related Issues

• Fixes Move Local Docker Setup to a deployment guide #1714
• Part of Update getting started docs #1097

Check List

• I confirm that my contribution is made under the terms of the Apache 2.0 license.
• I have verified pnpm checks passes with no errors.
• I have verified pnpm test passes with no failures.
• I have covered new added functionality with unit tests if necessary.
• I have updated documentation if necessary.