CenturyLinkLabs/dockerfile-from-image — pull request #1 by logankoester (2014-10-12 22:09:00+00:00)
Title: Use env utility in shebang

A given system may not have Ruby installed at the expected path. When distributing a script, it is idiomatic to use the [env](http://www.gnu.org/software/coreutils/manual/html_node/env-invocation.html) utility in the shebang line, which will cause the first `ruby` executable in the `$PATH` to be used.