added basic Dockerfile

[tepec]

So, I added a very simple Dockerfile that does the following:

• pulls the latest Node Alpine
• creates folder "saves" in the image and mount the volume provided (see hereafter)
• copy package*.json files (both normal and lock)
• set the timezone to Europe/Paris (just in case)
• npm install and npm run build
• copy the repo at the root of the image's workdir
• starts with npm start when a container of this image is ran

Here's how to use it:

cd /path/to/this/repo
docker build -t voice-chat-bot .
docker run -d -v /absolute/host/path/to/saves/:app/saves --restart=always --name=voice-chat-bot voice-chat-bot