Docker load image from alloc/ directory

I found an example of traversing parent directories in order to reach into the alloc/ directory.

    task "app" {
      driver = "docker"
      config {
        load  = "../../${NOMAD_ALLOC_DIR}/docker-image.tar"
        image = "docker-image"
      }
    }

This does seem to at least move me past one error, and into another:

open /var/lib/docker/tmp/docker-import-018997931/bin/json: no such file or directory

This may be just a problem with the image. I will need to verify the image is valid.