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docs: add API_URL environment variable to .env.example files

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Document the API_URL environment variable that is used for constructing
URLs for assets (logos, images) in email notifications. Without this
setting, the system defaults to http://localhost:3001 which causes
broken images in production emails.

Added to both root and backend .env.example files with clear
documentation about its purpose and importance.
This commit is contained in:
Paul Nothaft
2026-01-16 09:39:32 +01:00
parent 808ed1d2f1
commit 3e69579f5a
2 changed files with 10 additions and 0 deletions
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backend/.env.example
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@@ -14,6 +14,11 @@ ADMIN_URL=https://photos.example.com
FRONTEND_URL=https://photos.example.com
BACKEND_URL=https://photos.example.com # Or https://api.photos.example.com if separate
# API URL for email assets (logos, images in emails)
# This must be the publicly accessible URL where recipients can load images
# If not set, defaults to http://localhost:3001 which will break images in production emails
API_URL=https://photos.example.com/api
# Database Configuration
DATABASE_CLIENT=pg
DB_HOST=localhost