Initial commit carried over from private repo. This is V2.

code/MessengerApi.Db.Npg.Migrator/Program.cs

@@ -0,0 +1,16 @@
+namespace MessengerApi.Db.Npg.Migrator
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            // You can use empty string to build the context when adding a migration - adding a migration does not hit the DB.
+
+            // DesignTimeDbFactory.ConnectionString.cs is not versioned on purposed. Add missing property file for this partial class and then run this command:
+            // Add-Migration YourMigration -Project MessengerApi.Db.Npg -StartupProject MessengerApi.Db.Npg.Migrator -Verbose -Context MessengerNpgDbContext
+
+            // To update the database, make sure your connection string is correct and run this command:
+            // Update-Database -Project MessengerApi.Db.Npg -StartupProject MessengerApi.Db.Npg.Migrator -Verbose -Context MessengerNpgDbContext
+        }
+    }
+}