This package provides Rockerfiles syntax support. Rockerfile is a file format used by Rocker, a tool that extends docker functionality.
This package is a slightly rewritten version of language-docker package. So lots of thanks to it's developers!
Install the package
language-rocker in Atom's package manager from a shell:
$ apm install language-rocker
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.