diff --git a/Algorithm/MonteCarlo.cpp b/Algorithm/MonteCarlo.cpp
index 1d9af23..94c0369 100644
--- a/Algorithm/MonteCarlo.cpp
+++ b/Algorithm/MonteCarlo.cpp
@@ -4,16 +4,23 @@
 
 #include "MonteCarlo.hpp"
 #include "../Model/Model.hpp"
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
 
 void MonteCarlo::simulate(int nitr, Model *model_ptr) {
     std::ofstream output;
     output.open("output.json");
+    
+    json output_json = {
+		{"type", "common_origin"}, {"data", {} }
+	};
+    
     model_ptr->create_initial_spin_configuration();
-
-    output << R"({"type": "common_origin", "data": [)";
-
+    
+    
     int accepted_counter = 0;
-    output << model_ptr->save_spin_configuration(accepted_counter).str();
+  	output_json["data"].push_back(model_ptr->save_spin_configuration(accepted_counter).str());
 
     for (int i = 0; i < nitr; i++) {
         uword random_index = randi<umat>(1, 1, distr_param(0, (model_ptr->system_size) - 1))(0);
@@ -22,13 +29,12 @@ void MonteCarlo::simulate(int nitr, Model *model_ptr) {
         double change_eng = model_ptr->energy_change(random_index, new_s);
 
         if (change_eng < 0.0) {
-            output << ", ";
             model_ptr->update_spin_configuration(random_index, new_s);
             accepted_counter++;
-            output << model_ptr->save_spin_configuration(accepted_counter).str();
+		  	output_json["data"].push_back(model_ptr->save_spin_configuration(accepted_counter).str());
         }
     }
 
-    output << "]}";
+    output << output_json.dump();
     output.close();
 }
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a162e79..9e828fb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,10 @@
 cmake_minimum_required(VERSION 3.10)
-project(Simulation)
+project(MCSM)
 
 set(CMAKE_CXX_STANDARD 11)
 
-find_library(Simulation libarmadillo)
+find_library(MCSM libarmadillo)
 
-add_executable(Simulation main.cpp Model/Model.hpp Model/Heisenberg.cpp Algorithm/MonteCarlo.cpp Lattice/Lattice.hpp Model/Heisenberg.hpp Algorithm/MonteCarlo.hpp Algorithm/Algorithm.hpp)
+add_executable(MCSM main.cpp Model/Model.hpp Model/Heisenberg.cpp Algorithm/MonteCarlo.cpp Lattice/Lattice.hpp Model/Heisenberg.hpp Algorithm/MonteCarlo.hpp Algorithm/Algorithm.hpp)
 
-target_link_libraries(Simulation armadillo)
\ No newline at end of file
+target_link_libraries(MCSM armadillo)
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index 8d55139..8224163 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,10 @@
 FROM ubuntu:18.10
-RUN apt update && DEBIAN_FRONTEND=noninteractive apt install -y g++ git cmake
+RUN apt update && DEBIAN_FRONTEND=noninteractive apt install -y g++ git cmake nlohmann-json-dev libarmadillo-dev
+
 COPY . /usr/local
-WORKDIR /usr/local/cmake-build-debug
+
+WORKDIR /usr/local/
+
+RUN cmake . && make
+
+CMD ./MCSM ## docker build -t mcsm . && docker run mcsm
\ No newline at end of file