dotnet add package Microsoft.EntityFrameworkCore.Design
 dotnet add package MySql.Data.EntityFrameworkCore.Design

<ItemGroup>
   <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="2.0.1" />
</ItemGroup>

MySql.Data.EntityFrameworkCore.Design
Microsoft.EntityFrameworkCore.Tools

Scaffold-DbContext `"server=localhost;port=3306;user=root;password=mypass;database=sakila" MySql.Data.EntityFrameworkCore -OutputDir sakila -f`

RunScript(migrationBuilder, @"PathToYouScript");

private void RunScript(MigrationBuilder migrationBuilder, string scriptFilePath)
{
    var migratorPath = Path.Combine("..", scriptFilePath);

    if (!File.Exists(migratorPath))
    {
        migratorPath = Path.Combine("..", "..", "..", "..", scriptFilePath);
    }

    migrationBuilder.Sql(File.ReadAllText(migratorPath));
}