SAE supports image-based deployment and code package-based deployment.
Deploy applications using an image: Deploy a container image stored in an image registry to SAE. If you don't have an image, build one first.
Deploy applications using a code package: SAE provides specific versions of runtime environments for Java, PHP, Python, and .NET Core. If your code is compatible with one of these environments, create a code package that meets SAE requirements and deploy it to SAE.