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Adding environment variables

You can define environment variables while creating or updating a deployment:
  1. Go to your Environment Dashboard → select your service.
  2. add service and add Environment Variables, click Add Variable.
  3. Provide a key and value.
  4. Save changes and redeploy for updates to take effect.
Quick Option: You can also copy-paste the content of your .env file directly using the .ENV button in the form. DCDeploy will automatically parse and add the variables.

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Secrets management

Sensitive values (e.g., database passwords, API keys) should be stored as secrets. DCDeploy automatically encrypts them and injects them at runtime. Example:

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Overriding variables

  • Variables defined in the dashboard UI override those in the manifest.
  • Redeployment is required for changes to apply.
  • Deleted variables are removed from the runtime environment on next deploy.

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Best practices

  • Never hard-code secrets in images or code.
  • Use different env files for dev, staging, and production.
  • Prefix variables for clarity (e.g., DB_HOST, REDIS_URL).
  • Keep non-secret configs (like LOG_LEVEL) separate from sensitive ones.

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Example usage in code

const dbUrl = process.env.DATABASE_URL;