In a blog article on September 29, 2016, Alina Popa described some work around for seeding tables, setting up database conventions, and creating interceptors in Entity Framework Core 1.0.

The full article, Implementing Seeding, Custom Conventions and Interceptors in EF Core 1.0, can be read here.

These are functionalities that were previously supported by Entity Framework 6.  While this is not currently supported in Entity Framework Core 1.0, the blog article provides examples on stop-gap workaround for these functionalities.