Make dockerfiles folder a git submodule from indiehosters/applications

[pierreozoux]

Thanks!

I'll have to do extensives tests before accepting this PR, and probably, I'll not have time this month :/

But yeah good job!

Subsidiary question, why an npm module?

[michielbdejong]

@pierreozoux to test that this PR does not change any actual files, you can do the following:

• go to your master branch and run cp -r dockerfiles/ tmp
• go to this branch, and run git submodule init; git submodule update
• run rm -f dockerfiles/* ; mv tmp/* dockerfiles/
• cd dockerfiles/ ; git status

Then you should see if the files in the submodule are identical to the files you in the dockerfiles/ folder of your master branch.

[michielbdejong]

Outdated due to new commits in https://github.com/IndiePaaS/IndiePaaS/commits/master/dockerfiles