Adding the below line into the ConfigureServices method of the Startup.cs file will call EF migrations to run on app startup.

StartupDatabaseMigration

using Microsoft.EntityFrameworkCore;
...

public void ConfigureServices(IServiceCollection services)
{
  // Add other services here

  // Add the database context to the services collection for dependency injection
  services.AddDbContext<MyDatabaseContext>(options =>
                    options.UseSqlServer(Configuration.GetConnectionString("DatabaseConnectionString")));
  
  // Get the database context and apply the migrations
  var context = services.BuildServiceProvider().GetService<MyDatabaseContext>();
  context.Database.Migrate();
}