GistCF

//program.cs

var app = builder.Build();
var scope = app.Services.CreateScope();
await DataHelper.ManageDataAsync(scope.ServiceProvider);

GistCF

public static class ConnectionHelper
    {
        public static string GetConnectionString(IConfiguration configuration)
        {
            var connectionString = configuration.GetConnectionString("DefaultConnection");
            var databaseUrl = Environment.GetEnvironmentVariable("DATABASE_URL");
            return string.IsNullOrEmpty(databaseUrl) ? connectionString : BuildConnectionString(databaseUrl);
        }

        //build the connection string from the environment. i.e. Heroku

GistCF

public static class DataHelper
    {
      
        public static async Task ManageDataAsync(IServiceProvider svcProvider)
        {
            //Service: An instance of db context
            var dbContextSvc = svcProvider.GetRequiredService<ApplicationDbContext>();
            
            //Migration: This is the programmatic equivalent to Update-Database
            await dbContextSvc.Database.MigrateAsync();