Added ipv6 information so the docker won't fail to run

[themotu]

No description provided.

[corn13read]

Also fixes the following error

events.js:85
      throw er; // Unhandled 'error' event
            ^
Error: listen EACCES
    at exports._errnoException (util.js:746:11)
    at Server._listen2 (net.js:1139:19)
    at listen (net.js:1182:10)
    at net.js:1280:9
    at dns.js:85:18
    at process._tickCallback (node.js:355:11)

npm ERR! Linux 2.6.32-504.16.2.el6.x86_64
npm ERR! argv "node" "/usr/local/bin/npm" "start"
npm ERR! node v0.12.7
npm ERR! npm  v2.11.3
npm ERR! code ELIFECYCLE
npm ERR! lets-chat@0.4.2 start: `node app.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the lets-chat@0.4.2 start script 'node app.js'.
npm ERR! This is most likely a problem with the lets-chat package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node app.js
npm ERR! You can get their info via:
npm ERR!     npm owner ls lets-chat
npm ERR! There is likely additional logging output above.
npm ERR! Linux 2.6.32-504.16.2.el6.x86_64
npm ERR! argv "node" "/usr/local/bin/npm" "start"
npm ERR! node v0.12.7
npm ERR! npm  v2.11.3
npm ERR! path npm-debug.log.7da2e9feb6af80ea1c45d89105a542fd
npm ERR! code EACCES
npm ERR! errno -13

npm ERR! Error: EACCES, open 'npm-debug.log.7da2e9feb6af80ea1c45d89105a542fd'
npm ERR!     at Error (native)
npm ERR!  { [Error: EACCES, open 'npm-debug.log.7da2e9feb6af80ea1c45d89105a542fd']
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   path: 'npm-debug.log.7da2e9feb6af80ea1c45d89105a542fd' }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! Please include the following file with any support request:
npm ERR!     /usr/src/app/npm-debug.log

[hhaidar]

I think we want to keep this?

[themotu]

@hhaidar If we run it as node user then it fails, I tested it. But adding node as a group is fine I just don't see the purpose.

[TimWolla]

This cannot work anyway. Let's Chat does not listen on IPv6 addresses: https://github.com/sdelements/lets-chat/blob/master/app.js#L202

I am not sure what you are trying to achieve?

[themotu]

Look. Try to build it as is, when you see it fail then try it my way. Don't pull it I don't care. It failed without adding ipv6 to the container for me, so I fixed it and made a pull request.

[TimWolla]

Don't pull it I don't care

I am no employee of SD Elements, therefore it is not me who decides. But I care about the Docker image, as I run it in production.

It works just fine, as is. With the restricted user. I do run the Docker daemon with IPv6 support, though.