These dockerfiles are mostly used for development and testing.
By default, the scikit-learn master branch is compilied from source in a Debian unstable for the amd64 platform. Adapt the scikit-learn version (git tag), OS version / release and the architecture as needed.
debian/conda/Dockerfile: source installation with dependencies installed with condadebian/apt/Dockerfile: source installation with dependencies installed with apt and pip
For instance,
cd debian/conda/
docker build -t sklearn-debian-conda-amd64 .