I am trying to start a Mongo container using shared folders on Windows using Boot2Docker. When starting using run -it -v /c/Users/310145787/Desktop/mongo:/data/db mong
run -it -v /c/Users/310145787/Desktop/mongo:/data/db mong
It's seems like you don't need the data directory for MongoDb, removing those lines from your docker-composer.yml should run without problems.
The data directory is only used by mongo for cache.