Docker Compose can't directly use bootBuildImage. Instead:

1. Build the image:

   gradle bootBuildImage --imageName=myorg/myapp
   

2. Reference it in docker-compose.yml:

   services:
     backend:
       image: myorg/myapp
   

3. Automate with:

   gradle bootBuildImage && docker-compose up
   

This separates image building from Compose.

Why this approach?

bootBuildImage is a build tool, while docker-compose expects an existing image or a Dockerfile for context. By building the image first, Compose can easily use it.

Additional Notes For more details on bootBuildImage, refer to the Spring Boot Docker Guide.