error.log

dnx . ef migration add Initial
Using context 'MyContext'.
System.InvalidOperationException: A type named 'StartupProduction' or 'Startup' could not be found in assembly 'ef-xplat'.
  at Microsoft.AspNet.Hosting.Startup.StartupLoader.FindStartupType (System.String startupAssemblyName, IList`1 diagnosticMessages) [0x00000] in <filename unknown>:0 
  at Microsoft.AspNet.Hosting.Internal.HostingEngine.EnsureStartup () [0x00000] in <filename unknown>:0 
  at Microsoft.AspNet.Hosting.Internal.HostingEngine.EnsureApplicationServices () [0x00000] in <filename unknown>:0 
  at Microsoft.AspNet.Hosting.Internal.HostingEngine.get_ApplicationServices () [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.ContextTool.TryCreateContextFromStartup (System.Type type, System.String startupAssemblyName) [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.ContextTool.CreateContext (System.Type type, System.String startupAssemblyName) [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.MigrationTool.CreateContext (System.Type type, System.String startupAssemblyName) [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.MigrationTool.AddMigration (System.String migrationName, System.String contextTypeName, System.String startupAssemblyName, System.String rootNamespace, System.String projectDir) [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.Program+<>c__DisplayClass11_0.<AddMigration>b__0 () [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.Program.Execute (System.String startupProject, System.Func`1 invoke) [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.Program.AddMigration (System.String name, System.String context, System.String startupProject) [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.Program+<>c__DisplayClass9_1.<Main>b__6 () [0x00000] in <filename unknown>:0 
  at Microsoft.Framework.Runtime.Common.CommandLine.CommandLineApplication.Execute (System.String[] args) [0x00000] in <filename unknown>:0 
  at Microsoft.Data.Entity.Commands.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0 

MyContext.cs

using Microsoft.Data.Entity;

public class MyContext : DbContext
{

    public DbSet<Person> People { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder options)
    {
        options.UseSqlite("Data Source=./console_app.sqlite");
    }
}


public class Person
{
    public int Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

Program.cs

public class Program
{
	public static void Main(string[] args)
	{
		using(var context = new MyContext())
		{
			context.Database.EnsureCreated();
		}
	}
}

project.json

{
	"dependencies": {
		"EntityFramework.Commands": "7.0.0-*",
		"EntityFramework.Sqlite": "7.0.0-*"
	},
	"commands": {
		"ef": "EntityFramework.Commands"
	},
	"frameworks": {
		"dnx451": {}
	}
}