Haskell code examples - very much work in progress

There are two main parts

• docker - create docker images containing Haskell. You can then run from the command line using 'docker run -v /localproject:/app haskell /bin/bash' to get a command line with Haskell installed. Avoids ensuring that yuo have the right version installed locally

• tictactoe - A Tic-Tac-Toe game that is based on Event Sourcing