🧭 Type of Feature

Please select the most appropriate category:

• Enhancement to existing functionality
• New feature or capability
• New MCP-compliant server
• New component or integration
• Developer tooling or test improvement
• Packaging, automation and deployment (ex: pypi, docker, quay.io, kubernetes, terraform)
• Other (please describe below)

🧭 Feature

Title: Support External Database host/url
Goal: Use an external postgres such as RDS as the database
Why now: Many people would prefer to run a managed database like AWS RDS instead of managing their own inside k8s.

I don't think this is an EPIC, but just a single task to expand the helm chart template deployment-mcpgateway.yaml to avoid hard-coding POSTGRES_HOST to be associated with helm chart name. We should be able to set the it directly via helm.

Even better, we might just need to set a single secret string for DATABASE_URL from a secret, instead of the multiple environment variables obtained in different manners.

🔄 Alternatives Considered

List any alternative designs, existing workarounds, or rejected ideas.

📓 Additional Context

Include related issues, links to discussions, issues, etc.