Suggestion: Installation on any system running docker

[jrupp]

I wrote a script to add shellcheck to any system running docker, without actually installing anything. I put this into /usr/local/bin/shellcheck:

#!/bin/bash -
for last; do true; done
docker run --rm -iv "$( cd "$( dirname -- "${last}" )" && pwd )":/mnt koalaman/shellcheck "${@:1:$(($#-1))}" "$(basename -- "${last}")"

This works on Docker for Mac as well as a linux system running docker. I have tested it when calling shellcheck in any of these forms:

• shellcheck filename.sh
• shellcheck ../../filename.sh
• cat filename.sh | shellcheck -
• shellcheck -V

No modification of my editor settings was needed for this to integrate (I checked Vim through syntastic and VSCode).

If you think this might be useful, maybe add it to the installation instructions for other people to use?

[koalaman]

I just started a wiki Contrib page for nifty tips like this, and added this one!

https://github.com/koalaman/shellcheck/wiki/Contrib