Docker Compose POSTGRES_DB (cal-saml) does not match .env.example DATABASE_URL (calendso)

[mahdirajaee]

Description

The database name in packages/prisma/docker-compose.yml does not match .env.example:

• docker-compose.yml: POSTGRES_DB: "cal-saml"
• .env.example: DATABASE_URL="postgresql://postgres:@localhost:5450/calendso"

On a clean setup with a fresh Docker volume, Prisma migrations target the calendso database which does not exist in the container — only cal-saml does.

Impact

This hits every new contributor on their first yarn dx run. The setup either:

• Silently succeeds if Postgres auto-creates the database (masking the issue)
• Fails opaquely with a connection error that does not clearly indicate the name mismatch

Combined with other first-run friction points, this degrades the onboarding DX significantly.

Proposed Fix

One-line change — align both to the same name:

# packages/prisma/docker-compose.yml
POSTGRES_DB: "calendso"

This matches .env.example, which is the canonical reference for contributors.

Related: #28106 reports this exact mismatch.