This tool is a simple wrapper around docker run which will mount the current directory. It's useful when you have that python/node/ruby/whatever script that depends on locally installed stuff. Forget pyenv and rbenv. Just get inside a docker container with drun.
If you use brew, do: brew tap jpbochi/tap && brew install drun
If not, try: curl -fsSL https://raw.github.com/jpbochi/drun/master/install.sh | bash
If you want to install an specific version, try: curl -fsSL https://raw.github.com/jpbochi/drun/master/install.sh | bash -s -- -v 1.2.1
You can also install it somewhere else with: curl -fsSL https://raw.github.com/jpbochi/drun/master/install.sh | bash -s -- -d ./temp
alias dr-node='drun -N -P'
alias dr-compose='drun -e HOME="$HOME" -I docker/compose:1.9.0'
alias dr-py='drun -I python:2.7'
$ drun alpine sh
/Users/jpbochi/src/jp/drun # ls
README.md drun install
/Users/jpbochi/src/jp/drun # echo hello > world.txt
/Users/jpbochi/src/jp/drun #
$ ls
README.md drun install world.txt
$ drun alpine false
$ echo $?
1
$ node --version
v5.12.0
$ drun node:5.7 node --version
v5.7.1
$ ARRRRR=arrrrrrrrrrr MOARRR=moar drun -e ARR alpine env
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
HOSTNAME=moby
TERM=xterm
ARRRRR=arrrrrrrrrrr
MOARRR=moar
HOME=/Users/jpbochi/src/jp/drun
no_proxy=*.local, 169.254/16