Install latest npm in container before express
Install latest npm in container before express

The default version of npm in the docker base image fails during npm
prune with `npm ERR! invalid bin entry for package msgpack-lite`.

This is a known and fixed bug in npm: https://github.com/npm/cli/issues/613

Ticket: BG-19035

BitGo/BitGoJS,BitGo/BitGoJS,BitGo/BitGoJS,BitGo/BitGoJS