tree ae9c6be37e2c2d4b593d5cc75eeb73457d911771
parent fe3e9f7d8480ea2ed8cfa68a310a7d8bf6162160
author Josh Bleecher Snyder <josharian@gmail.com> 1745516057 -0700
committer Josh Bleecher Snyder <josharian@gmail.com> 1745516057 -0700

dockerimg: use more modern APIs

- bytes.Lines instead of bufio.NewScanner
- bytes.CutPrefix instead of HasPrefix/TrimPrefix

Simpler, cheaper.

There is a slight change in that bytes.Lines includes the
trailing newline, and bufio.Scanner does not.
But we only do prefix work to start, and then we do a TrimSpace,
so this ends up being a wash.