diff --git a/src/DockerModule.cpp b/src/DockerModule.cpp
index 95be0b7..8abf2f0 100644
--- a/src/DockerModule.cpp
+++ b/src/DockerModule.cpp
@@ -13,19 +13,18 @@ int DockerModule::prepare()
 	return BashManager::execute("systemctl start docker docker.socket");
 }
 
-int DockerModule::deploy (Service service)
+int DockerModule::deploy (string serviceUsername)
 {
+	//go to the right directory
 	//pulling images
 	int pulling =BashManager::execute("docker-compose pull")==0;
 	if(pulling==0){
 		//starting service
 		int starting=BashManager::execute("docker-compose up -d --remove-orphans"); 
-
 	}else{
-		cerr << "Error in DockerModule deploying "<< service << endl;
+		cerr << "Error in DockerModule deploying "<< serviceUsername << endl;
 		return -1;
 	}
-
 	return 0;
 }
 
@@ -41,11 +40,11 @@ int removeContainersWithServiceName(string serviceName)
 	return BashManager::execute(cmd);
 }
 
-int DockerModule::remove (Service service)
+int DockerModule::remove (string serviceUsername)
 {
 	//remove unwanted containers
 	removeContainersCreatedByDockerCompose();	
-	removeContainersWithServiceName(service.getUsername());
+	removeContainersWithServiceName(serviceUsername);
 	return 0;
 }
 
diff --git a/src/DockerModule.h b/src/DockerModule.h
index b8d3492..ebc9a79 100644
--- a/src/DockerModule.h
+++ b/src/DockerModule.h
@@ -13,8 +13,8 @@ class DockerModule : public Module
     DockerModule(){} //inline
     ~DockerModule(){} //inline
     int prepare ();
-    int deploy (Service service);
-    int remove(Service service);
+    int deploy (string serviceUsername);
+    int remove(string serviceUsername);
     int clean ();
 };
 
diff --git a/src/Module.h b/src/Module.h
index 553c73f..e0def5c 100644
--- a/src/Module.h
+++ b/src/Module.h
@@ -15,8 +15,8 @@ class Module
     //=0 means pure virtual method, making Module a pure virtual class
     virtual ~Module()=0; //make protected to ensure it is not used externally?
     virtual int prepare ()=0;
-    virtual int deploy (Service service)=0;
-    virtual int remove(Service service)=0;
+    virtual int deploy (string serviceUsername)=0;
+    virtual int remove(string serviceUsername)=0;
     virtual int clean ()=0;
 };
 #endif
\ No newline at end of file
diff --git a/src/Modules.h b/src/Modules.h
index ba4f9e4..2cba951 100644
--- a/src/Modules.h
+++ b/src/Modules.h
@@ -2,5 +2,5 @@
 #include <string>
 
 using namespace std;
- 
-vector < string > modules = {"DockerModule"};   
\ No newline at end of file
+DockerModule dockerModule=DockerModule();
+vector <Module> modules = {dockerModule};   
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index ab161b0..8c9475e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -6,8 +6,11 @@
 #include <cstdlib>
 #include <iostream>
 #include <cstring>
+#include <filesystem>
 #include "Services.h"
+#include "Modules.h"
 #include "DockerModule.h"
+#include "BashManager.h"
 using namespace std;
 
 void help(char * argv0)
@@ -16,22 +19,13 @@ void help(char * argv0)
     cout << "usage: ./" << argv0 <<"action file \n with action=deploy or remove and file=path to a file or all. \n" << endl;
 }
 
-int isServiceOnServer(Service service)
+int isServiceOnServer(string serviceUsername)
 //this method tests if a certain service is on the current server
 //it looks into the /etc/hosts file thanks to a pipe to a separate bash process
 {
-    FILE *p;
-    char result [100]={0};
-    string cmd ="getent hosts " +service.getUsername();  
-    p = popen(cmd.c_str(),"r"); 
-    if( p == NULL)
-    {
-        cerr << "Unable to verify if the service is on the server, bash process opening error." << endl;
-        return -1;
-    }
-    fgets(result,100,p);
-    pclose(p);
-    if(strstr(result,"::1")!=nullptr){
+    string cmd ="getent hosts " +serviceUsername;  
+    string result = BashManager::executeAndReadResult(cmd);
+    if(result.find("::1")!=string::npos){ //if result contains "::1"
         cout << "service on server" << endl;
         return 0;
     }
@@ -39,14 +33,52 @@ int isServiceOnServer(Service service)
     return 1;
 }
 
+int createUser(string serviceUsername){
+    //TO DO
+    return 0;
+}
+
+int createEnv(string serviceUsername){
+    //TO DO 
+    return 0;
+}
+
+int runBashScripts(string serviceUsername){
+    //TO DO
+    return 0;
+}
+
 int deployAll(){
+    //this methods deploys all the services that are on this server
     cout << "deploying all" <<endl;
     return 0;
 }
 
-int deployService(string service){
-    cout << "deploying service" << endl;
-    return 0;
+int deployService(string serviceUsername){
+    //this method deploys indicated service if it is on this server
+    //TO DO: faire des boucles if cohérentes
+    if (isServiceOnServer(serviceUsername)==0){
+        //bash user creation
+        int userCreated = createUser(serviceUsername);
+        //environment variables creation
+        int envCreated = createEnv(serviceUsername);
+        //bash scripts call
+        int bashScriptsRun = runBashScripts(serviceUsername);
+        //call to the deploy functionality of all modules
+        //the modules themselves determine their course of action depending on the service
+        if (userCreated && envCreated){
+            for(Module * mod : modules){
+                int modResult = (*mod).deploy(serviceUsername);
+                if (modResult!=0){
+                    cerr << "Error in module "<< mod << " when deploying " << serviceUsername << endl;
+                }
+            }
+            return 0;
+        }else{
+            cerr << "Error creating user and environment of "<<serviceUsername << endl;
+        }
+    }
+    
 }
 
 int removeAll(){
@@ -54,39 +86,43 @@ int removeAll(){
     return 0;
 }
 
-int removeService(const char* service){
+int removeService(string serviceUsername){
     cout<< "removing service"<<endl;
     return 0;
 }
 
 int main(int argc, char *argv[])
 {
+    //check number of arguments
     if (argc != 3){
         cout << "Invalid number of arguments. \n" << endl;
         help(argv[0]);
-        exit(1);
+        return -1;
     } else {
-        if (strcmp(argv[1],"deploy")==0){
-            if(strcmp(argv[2],"all")==0){
-                deployAll();
-            }else{
-                string service = argv[2];
-                deployService(service);
-            }
-        } else if (strcmp(argv[1],"remove")==0){
-            if(strcmp(argv[2],"all")==0){
-                removeAll();
-            }else{
-                removeService(argv[2]);
-            }
+        //check that data is mounted on the server
+        if (!filesystem::exists("/data/mounted")) {
+            cerr << "Error. The data is not mounted on the server" << endl;
+            return -1;
         } else {
-            cout << "Invalid argument. \n" << endl;
+            //read instructions
+            string action = argv[1];
+            string service = argv[2];
+            if (action=="deploy"){
+                if(service=="all"){
+                    deployAll();
+                } else {
+                    deployService(service);
+                }
+            } else if (action=="remove"){
+                if(service=="all"){
+                    removeAll();
+                } else {
+                    removeService(service);
+                }
+            } else {
+            cerr << "Invalid argument. \n" << endl;
             exit(1);
         }
-
-        //DockerModule dmodule;  
-        Services services = Services();    
-        isServiceOnServer(services.getServices()[0]);   
     }
     return 0;
 }