Switch to Caddy for managing certificates and fix env variables passing

[RomanPszonka]

No description provided.

[RomanPszonka]

@hrishiballal would need to be tested online first before merging

[Copilot]

Pull request overview

This PR migrates certificate management from cert-manager with nginx-ingress-controller to Caddy ingress controller, which provides automatic HTTPS certificate management. The PR also includes unrelated database configuration improvements.

• Removes cert-manager Issuer and Certificate resources
• Replaces nginx ingress with Caddy ingress controller
• Standardizes database connection strings to use environment variables

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
templates/issuer-template.yaml	Removed - cert-manager issuer configuration no longer needed with Caddy
templates/certificate-wcard-template.yaml	Removed - Caddy handles wildcard certificates automatically
templates/certificate-root-template.yaml	Removed - Caddy handles root domain certificates automatically
templates/ingress-template.yaml	Migrated from nginx to Caddy ingress class, removed cert-manager annotations and TLS configuration
generate-from-templates.sh	Updated to only generate ingress configuration, removed cert-manager template processing
README.md	Updated installation instructions to use Caddy ingress controller instead of nginx + cert-manager
kustomize/passport/passport.yaml	Added POSTGRES_PORT environment variable and updated DATABASE_URL to use it; removed trailing whitespace
kustomize/passport/db-passport.yaml	Added POSTGRES_PORT environment variable
kustomize/blender/blender.yaml	Added POSTGRES_PORT environment variable and updated DATABASE_URL to use it; removed trailing whitespace
kustomize/blender/worker.yaml	Added POSTGRES_PORT environment variable and updated DATABASE_URL to use it; removed trailing whitespace
kustomize/blender/beat.yaml	Added POSTGRES_PORT environment variable and updated DATABASE_URL to use it; removed trailing whitespace
kustomize/blender/db-blender.yaml	Added POSTGRES_PORT environment variable

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