Extract BeforeRunHandle method. It runs some procedures like Migrate() on startup.

AsbCloudDb/Model/AsbCloudDbContext.cs

@@ -47,14 +47,14 @@ namespace AsbCloudDb.Model
 
         public AsbCloudDbContext() : base()
         { 
-            Database.Migrate();
+            //Database.Migrate();
         }
 
         public AsbCloudDbContext(DbContextOptions<AsbCloudDbContext> options)
             : base(options)
         {
             //Database.SetCommandTimeout(60 * 60 * 2);
-            Database.Migrate();
+            //Database.Migrate();
         }
 
         protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)

AsbCloudDb/Model/IAsbCloudDbContext.cs

@@ -1,14 +1,12 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
 namespace AsbCloudDb.Model
 {
-    public interface IAsbCloudDbContext
+    public interface IAsbCloudDbContext: IDisposable
     {
         DbSet<Cluster> Clusters { get; set; }
         DbSet<Company> Companies { get; set; }

AsbCloudInfrastructure/Startup.cs

@@ -0,0 +1,26 @@
+using AsbCloudApp.Services;
+using AsbCloudDb.Model;
+using AsbCloudInfrastructure.Services.Cache;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using System;
+
+namespace AsbCloudInfrastructure
+{
+    public  class Startup
+    {
+        public static void BeforeRunHandler(IHost host, IConfigurationRoot configuration)
+        {               
+            using var scope = host.Services.CreateScope();
+            var context = scope.ServiceProvider.GetService<IAsbCloudDbContext>();
+            context.Database.SetCommandTimeout(TimeSpan.FromSeconds(2 * 60));
+
+            context.Database.Migrate();
+
+            var wellService = scope.ServiceProvider.GetService<IWellService>();
+            wellService.EnshureTimezonesIsSet();
+        }
+    }
+}

AsbCloudWebApi/Program.cs

@@ -1,5 +1,8 @@
+using AsbCloudDb.Model;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using System;
 using System.Linq;
@@ -10,17 +13,16 @@ namespace AsbCloudWebApi
     {
         public static void Main(string[] args)
         {
-            //new TraceListenerView(); // to trace mysterious errors
-            if(args?.Length > 0 )
-            {
-                if (args.Contains("db_init")) { 
-                    var connectionStringName = "DefaultConnection";
-                
             IConfigurationRoot configuration = new ConfigurationBuilder()
               .SetBasePath(AppDomain.CurrentDomain.BaseDirectory)
               .AddJsonFile("appsettings.json")
               .Build();
 
+            if (args?.Length > 0 )
+            {
+                if (args.Contains("db_init")) { 
+                    var connectionStringName = "DefaultConnection";
+
                     AsbCloudInfrastructure.DependencyInjection.MakeContext(configuration.GetConnectionString(connectionStringName));
                     Console.WriteLine("Óñïåøíî âûïîëíåíî.");
                     return;
@@ -29,7 +31,9 @@ namespace AsbCloudWebApi
                 return;
             }            
             
-            CreateHostBuilder(args).Build().Run();
+            var host = CreateHostBuilder(args).Build();
+            AsbCloudInfrastructure.Startup.BeforeRunHandler(host, configuration);
+            host.Run();
         }
 
         public static IHostBuilder CreateHostBuilder(string[] args) =>