This is the Haskell MongoDB driver (client). MongoDB is a free, scalable, fast, document database management system. This driver lets you connect to a MongoDB server, and update and query its data. It also lets you do adminstrative tasks, like create an index or look at performance statistics.It's important for this library to be tested with various versions of mongodb server and with different ghc versions. In order to achieve this we use docker containers and docker-compose. This repository contains two files: docker-compose.yml and reattach.sh.