Using `RUN --mount`, we can run the command with the build stage files overlayed for the `ln` and `which` commands.
`/bin` is a symlink to `/usr/bin`, both seem required to work correctly.
There's an override error with latest alpine and various versions of glibc (including 2.35): https://github.com/sgerrand/alpine-pkg-glibc/issues/185
This MR proposes a workaround (tested on fly.io - it works) so that it's possible to have bun usable with minimal linux dependencies.
* Create github workflow to publish releases on dockerhub
* Improve readability of final dockerhub dockerfile RUN command
Co-authored-by: Wulfre <wulfre@users.noreply.github.com>