Customise single-command installation for a MS Windows PC

[Don-Isdale]

part of #377

Introduction

#399 added blastServer.py to an existing docker-compose.yaml to enable all the sub-processes of the Pretzel server system to be started with a single command.
The next stage of this process will be to customise the docker-compose yaml for installation on a MS Windows PC, which is the focus of this issue.

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• customise directories etc in docker-compose.combined.yaml for installation on a MS Windows PC
• • Probably use port 80 if possible, or a custom port.
• • Fail with errors if required ports are already in use, e.g. Mongo 27017
• • Use can customise the ports used in the .env file - give example.