Self-Hosted Heatmaps/Recordings via Docker

If anyone is interested in trying the analytics app I've been building over the last 13 years, I have just added a docker-compose you can try. A client requested to have a production-ready alternative to the existing all-in-one Docker image, which was just made for testing the setup the app using a single command:

``` docker run -d -p 8080:80 --name uxwizz -v uxwizz_www:/var/www/html -v uxwizz_db:/var/lib/mysql uxwizz/uxwizz ```

This has both the web-server and DB in the same container, which is not best practice, but avoids the need of having to download a docker-compose file.

Now, I also made a docker-compose for those who want separate web/db containers and more control over the setup.