Secrets

A secret is a piece of data, such as a password, SSH private key, SSL certificate, or anything that should not be transmitted over a network or stored unencrypted in a Dockerfile or in your application's source code.

Docker provides specially designated features for managing secrets.

マニュアル

• Build secrets
• Docker Compose における Secrets のセキュアな管理
• Using secrets with GitHub Actions
• Docker シークレットを使った機密情報の管理