fix(docker): fixed docker container healthchecks, added instructions to README for pgvector

[waleedlatif1]

Description

Fixed docker container healthchecks, added instructions to README for pgvector

Fixes #720, #658

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Documentation update

How Has This Been Tested?

Tested manually to ensure the realtime server works now with healthchecks in place.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• All tests pass locally and in CI (bun run test)
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have updated version numbers as needed (if needed)
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

Security Considerations:

• My changes do not introduce any new security vulnerabilities
• I have considered the security implications of my changes

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
docs	🔄 Building (Inspect)	Visit Preview		Jul 21, 2025 4:23am
sim	🔄 Building (Inspect)	Visit Preview	💬 Add feedback	Jul 21, 2025 4:23am

[delve-auditor]

✅ No security or compliance issues detected. Reviewed everything up to af7eef8.

Security Overview

• 🔎 Scanned files: 3 changed file(s)

Detected Code Changes

Change Type	Relevant files
Documentation	► README.md     Add pgvector extension setup instructions and requirements
Configuration changes	► docker-compose.local.yml     Update healthcheck endpoint ► docker-compose.prod.yml     Update healthcheck endpoint

Reply to this PR with @delve-auditor followed by a description of what change you want and we'll auto-submit a change to this PR to implement it.

[greptile-apps]

Greptile Summary

This PR addresses two key operational issues in the SimStudio infrastructure:

1. Fixes Docker container healthchecks by updating the realtime service's healthcheck endpoint from '/' to '/health'
2. Enhances documentation with clear pgvector setup requirements in the README

The changes modify the Docker Compose configurations (both production and local) to use the correct healthcheck endpoint, preventing startup failures. The README has been updated with comprehensive instructions for setting up PostgreSQL with the required pgvector extension, which is essential for AI features like knowledge bases and semantic search.

Confidence score: 4/5

1. This PR is safe to merge as it fixes critical infrastructure issues without introducing breaking changes
2. The score reflects high confidence in the changes due to their straightforward nature and clear documentation, with a point deducted due to lack of automated tests
3. Files needing attention:
   • Verify that '/health' endpoint is properly implemented in the realtime service
   • Double-check the pgvector version compatibility in README against the current deployment requirements

_{3 files reviewed, no comments}

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