Use `Progress`, and options to pass around the way messages are written.
Fixed some tiny issues in the code, but otherwise no functional changes.
To make colored output work with `docker run`, switched back image
generation to use volume mount for output (old mode is still
functioning, but it's not the default, and it works when docker is not
running on the same host).
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
Use the `go-blockdevice` library to zero partitions.
Also added a test that writes `ones` to the partition and verifies its
zeroes after zeroing it.
Signed-off-by: Noel Georgi <git@frezbo.dev>
