Docker

[SimonHaas]

Hi,

because I wanted to host your great tool by myself on my docker-homeserver I added docker support.

For development:

docker build -t grunt ./docker/grunt/
docker run --rm -it -v "$PWD":/usr/src/project -w /usr/src/project grunt npm install
docker run --rm -it -p 8080:8080 -v "$PWD":/usr/src/project -w /usr/src/project grunt grunt dev

For a production-build while developing:

docker run --rm -it -v "$PWD":/usr/src/project -w /usr/src/project grunt grunt prod
docker-compose up -d

Improvements are welcomed.
Feel free to merge it or not :)

[CLAassistant]

All committers have signed the CLA.

[nileshtrivedi]

This would be really helpful for easier deployment in container environments (like CapRover for self-hosting).