Apedik/varnish production mode

[apedicdev]

Added varnish on production mode, in case you wanted merge or have a separate branch

[cmtickle]

Hi @apedicdev,

There is functionality in the scripts to piggy-back the magento deploy:mode:set and copy files in to enable production mode. here : https://github.com/cmtickle/docker-stack/blob/master/project/includes/_functions_m2.sh#L249

I feel it would be better if this functionality was added by extending there. The primary use of this docker-stack is as a development environment, these changes would potentially make things more difficult whilst developing.

Please let me know what you think?

[apedicdev]

@cmtickle it definitely makes sense, that's why I had created a separated branch, in case we would like to test production mode with varnish full page cache enabled. I will have a look how to extend the included functionality and possibly merge it to master once it can be enabled/disabled easily