def bdist_deb()

in tasks.py [0:0]


def bdist_deb(ctx, distro=None):
    """Build package for Debian stable using Docker"""
    ctx.run("docker build --tag dh-venv-builder --build-arg distro={} ."
            .format(distro or 'debian:stable'))
    os.path.exists('dist') or os.makedirs('dist')
    ctx.run("docker run --rm dh-venv-builder tar -C /dpkg -c . | tar -C dist -xv")
    ctx.run("ls -lth dist/")