Building devcontainers does not use .dockerignore file next to the Dockerfile.

[GarbenTangheVintecc]

Hi, is it possible that the .dockerignore file next to the Dockerfile is not being used to ignore files in the build context?

I used to think only the .dockerignore file in the root of the Docker build context was used and I know that it is not possible to specify another .dockerignore file using command line arguments (e.g. -i path/to/.dockerignore). Then I read about this file naming workaround: Filename and location.

This works fine when I use docker compose build, docker buildx build, and docker buildx bake. However, opening in a container, this Dockerfile.dockerignore next to my Dockerfile is not being used, while the one in the root of my context is working.