Environment Variables

Configure your containers with environment variables and secrets.

Variable Types

Build Variables

Available during Docker build (e.g., for private npm packages)

Runtime Variables

Available when your container runs (database URLs, API keys)

Secrets

Encrypted variables that are never logged or exposed

Adding Variables

  1. 1 Go to your container's Settings page
  2. 2 Navigate to Environment Variables
  3. 3 Add key-value pairs
  4. 4 Click Save & Restart to apply changes

Common Variables

NODE_ENV=production
DATABASE_URL=postgres://user:pass@host:5432/db
REDIS_URL=redis://host:6379
API_KEY=your-secret-api-key
PORT=3000 # Auto-set by SnapDeploy

Security Best Practices

  • Never commit secrets to Git
  • Use secrets for sensitive values (passwords, API keys)
  • Rotate secrets regularly
  • Use different values for staging and production
CLI Reference Custom Domains