docker files fixes from liaqat

src/Managing.Infrastructure.Database/MongoDb/Attributes/BsonCollectionAttribute.cs

@@ -0,0 +1,13 @@
+namespace Managing.Infrastructure.Databases.MongoDb.Attributes
+{
+    [AttributeUsage(AttributeTargets.Class, Inherited = false)]
+    public class BsonCollectionAttribute : Attribute
+    {
+        public string CollectionName { get; }
+
+        public BsonCollectionAttribute(string collectionName)
+        {
+            CollectionName = collectionName;
+        }
+    }
+}