Add OrmLite DB Migrations to an existing project

Configure.Db.Migrations.cs

using MyApp.Migrations;
using ServiceStack;
using ServiceStack.Data;
using ServiceStack.OrmLite;

[assembly: HostingStartup(typeof(MyApp.ConfigureDbMigrations))]

namespace MyApp;

// Code-First DB Migrations: https://docs.servicestack.net/ormlite/db-migrations
public class ConfigureDbMigrations : IHostingStartup
{
    public void Configure(IWebHostBuilder builder) => builder
        .ConfigureAppHost(afterAppHostInit:appHost => {
            var migrator = new Migrator(appHost.Resolve<IDbConnectionFactory>(), typeof(Migration1000).Assembly);
            AppTasks.Register("migrate", _ => migrator.Run());
            AppTasks.Register("migrate.revert", args => migrator.Revert(args[0]));
            AppTasks.Run();
        });
}

Migrations\Migration1000.cs

using ServiceStack.DataAnnotations;
using ServiceStack.OrmLite;

namespace MyApp.Migrations;

public class Migration1000 : MigrationBase
{
    public class MyTable
    {
        [AutoIncrement]
        public int Id { get; set; }
        public string Name { get; set; }
    }

    public override void Up()
    {
        Db.CreateTable<MyTable>();
    }

    public override void Down()
    {
        Db.DropTable<MyTable>();
    }
}

package.json.patch

[
    { "op":"add", "path":"/scripts/postinstall", "value":"dotnet run --AppTasks=migrate" },
    { "op":"add", "path":"/scripts/migrate",     "value":"dotnet run --AppTasks=migrate" },
    { "op":"add", "path":"/scripts/revert:last", "value":"dotnet run --AppTasks=migrate.revert:last" },
    { "op":"add", "path":"/scripts/revert:all",  "value":"dotnet run --AppTasks=migrate.revert:all" },
]