Function build_image 

pub fn build_image(
    engine: &Engine,
    request: &ImageBuild<'_>,
    cancel: &dyn Fn() -> bool,
    line: &mut dyn FnMut(&str),
) -> Result<(), EngineError>

Builds an image, showing the build as it happens and leaving nothing behind when it is cancelled or fails.

A build that stops halfway can leave its tag on an image that was never finished; the next run would then start a container from it and the harness inside would be missing pieces. So anything but success takes the tag away again, and a removal that fails because there is nothing to remove is exactly what is wanted anyway.

Errors

When the engine cannot be started, the build fails, or the person cancels it.