Add docker file

include/TessesFramework/Lazy.hpp

@@ -0,0 +1,51 @@
+#pragma once
+#include "Common.hpp"
+#include "Threading/Mutex.hpp"
+#include <functional>
+namespace Tesses::Framework {
+template<typename T>
+    class Lazy {
+        Threading::Mutex mtx;
+        T value;
+        bool hasInit=false;
+        std::function<T()> init;
+        std::function<void(T)> free;
+        public:
+            Lazy(std::function<T()> init, std::function<void(T)> free)
+            {
+                this->init = init;
+                this->free = free;
+            }
+            Lazy(std::function<T()> init) : Lazy(init, [](T item)->void {})
+            {
+
+            }
+            bool HasInit()
+            {
+                mtx.Lock();
+                bool hI = this->hasInit;
+                mtx.Unlock();
+                return hI;
+            }
+            T& GetValue()
+            {   
+                mtx.Lock();
+                if(hasInit)
+                {
+                    mtx.Unlock();
+                    return this->value;    
+                }
+                else
+                {
+                    this->value = this->init();
+                    mtx.Unlock();
+                    return this->value;
+                }
+                mtx.Unlock();
+            }
+            ~Lazy()
+            {
+                if(hasInit) this->free(this->value);
+            }
+    };
+}