运行项目时 EF Core 自动迁移

启动项目时自动迁移执行数据库迁移，方便在使用容器部署项目时，启动容器即可迁移数据。

using IdentityServer4;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using MiniShop.Ids;
using MiniShop.Ids.Config;
using MiniShop.Ids.Data;
using MiniShop.Ids.Models;
using Serilog;

namespace Microsoft.Extensions.DependencyInjection
{
    public static class ServiceCollectionExtensions
    {
        public static IServiceCollection AddWebHost(this IServiceCollection services, IWebHostEnvironment env)
        {
            services.AddControllersWithViews().AddRazorRuntimeCompilation();

            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseMySql(BasicSetting.Setting.ConnectionString));

            services.AddMigrations();

            return services;
        }

        public static IServiceCollection AddMigrations(this IServiceCollection services)
        {
            // 自动迁移
            services.BuildServiceProvider().GetService<ApplicationDbContext>().Database.Migrate();
            return services;
        }

    }
}

使用 Database.Migrate() 自动迁移（migration），怎么回滚呢？
https://stackoverflow.com/questions/69714351/how-to-downgrade-entity-framework-core-migrations-in-docker-container-docker-swa

EF 迁移到 Docker 容器可参考：
https://makolyte.com/asp0000-calling-buildserviceprovider-from-application-code-results-in-an-additional-copy-of-singleton-services-being-created/