Remove pynetdicom from Dockerfile.
Remove pynetdicom from Dockerfile.

carlohamalainen/imagetrove,NIF-au/imagetrove,carlohamalainen/imagetrove,NIF-au/imagetrove,carlohamalainen/imagetrove,carlohamalainen/imagetrove,NIF-au/imagetrove,NIF-au/imagetrove,NIF-au/imagetrove