diff --git a/bin/deployer b/bin/deployer
index 4804c9d..e9887d3 100755
Binary files a/bin/deployer and b/bin/deployer differ
diff --git a/src/DockerModule.cpp b/src/DockerModule.cpp
new file mode 100644
index 0000000..38d61b9
--- /dev/null
+++ b/src/DockerModule.cpp
@@ -0,0 +1,49 @@
+// deployer DockerModule implementation
+// Copyright (C) 2024 Jean-Cloud
+// GNU General Public License v3
+
+#include "DockerModule.h"
+
+//constructor and destructor inline 
+
+//public methods
+int DockerModule::prepare()
+{
+	return 0;
+    //nothing to do ?
+}
+
+int DockerModule::deploy (Service service)
+{
+	return 0;
+    /* bash script for inspo
+    isServiceOnServer();
+docker_service="$(echo "$service" | tr '.' '_')"
+
+## deploy 
+
+
+	if $deploy ; then
+    	section "Logging to registry"
+    	# XXX Login to docker registry
+
+    	section "Pulling images"
+    	docker-compose pull
+		if [ "$?" -ne 0 ] ; then
+			echo "PULL FAILED"
+		fi
+
+    	section "Starting service"
+    	run docker-compose up -d --remove-orphans
+		[ "$?" -ne 0 ] && echo "Erreur docker compose" && returncode=1
+	else
+		section "Removing containers"
+    	run docker-compose down --rmi all --remove-orphans
+	fi
+fi
+*/
+}
+int DockerModule::clean ()
+{
+	return 0;
+}
\ No newline at end of file
diff --git a/src/DockerModule.h b/src/DockerModule.h
new file mode 100644
index 0000000..dea6ee3
--- /dev/null
+++ b/src/DockerModule.h
@@ -0,0 +1,20 @@
+// deployer DockerModule header
+// Copyright (C) 2024 Jean-Cloud
+// GNU General Public License v3
+
+#if !defined(DOCKERMODULE_H)
+#define DOCKERMODULE_H
+
+#include "Module.h"
+
+class DockerModule : public Module
+{
+    public:
+    DockerModule(){} //inline
+    ~DockerModule(){} //inline
+    int prepare ();
+    int deploy (Service service);
+    int clean ();
+};
+
+#endif
\ No newline at end of file
diff --git a/src/Module.cpp b/src/Module.cpp
index 6f90997..1c36094 100644
--- a/src/Module.cpp
+++ b/src/Module.cpp
@@ -2,8 +2,35 @@
 // Copyright (C) 2024 Jean-Cloud
 // GNU General Public License v3
 
+#include <stdio.h>
+#include <iostream>
 #include "Module.h"
 
+//constructor inline
+//destructor, could not be inline because pure virtual
 Module::~Module(){}
 
+//protected methods (unprotected for tests purposes)
+int Module::isserviceOnServer()
+//this method tests if a certain service is on the current server
+//it uses the bash command dig, thanks to a pipe to a separate bash process
+{
+    FILE *p;
+    char result [100];
+
+    p = popen("ls -la","r"); //just to test that popen works
+    if( p == NULL)
+    {
+        cout << "Unable to verify if the service is on the server, bash process opening error." << endl;
+        return -1;
+    }
+    while(fgets(result,100,p)!=NULL){
+        //if several lines, copy result somewhere to save it
+        cout << result << endl;
+    }
+    pclose(p);
+    return 0;
+}
+
+
 
diff --git a/src/Module.h b/src/Module.h
index 0fc1e9e..5a1c653 100644
--- a/src/Module.h
+++ b/src/Module.h
@@ -6,16 +6,18 @@
 #define MODULE_H
 
 #include <iostream>
+#include "Service.h"
 
 class Module 
 {
-    protected:
+    public:
     Module(){};
-    virtual ~Module()=0;
-
-    private:
-    bool activated; //true if the service requires this module
-    char * service;
-
+    //=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 clean ()=0;
+    //protected: commented for test purposes
+    virtual int isserviceOnServer();
 };
 #endif
\ No newline at end of file
diff --git a/src/Service.cpp b/src/Service.cpp
index 309516d..7f3c3fd 100644
--- a/src/Service.cpp
+++ b/src/Service.cpp
@@ -4,6 +4,9 @@
 
 #include "Service.h"
 
+//constructor and destructor defined inline
+
+//public methods
 int Service::getUserID () const
 {
     return userID;
@@ -17,6 +20,7 @@ list<string> Service::getServers() const
     return servers;
 }
 
+//operator << override
 ostream & operator << (ostream & out, const Service & s)
 {
     out << "userID: " << s.userID << endl << "username: " << s.username << endl << "servers: ";
diff --git a/src/deployer b/src/deployer
new file mode 100755
index 0000000..c127462
Binary files /dev/null and b/src/deployer differ
diff --git a/src/main.cpp b/src/main.cpp
index 9256ffb..f5c9824 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -7,12 +7,13 @@
 #include <iostream>
 #include <cstring>
 #include "Services.h"
-#include "Module.h"
+#include "DockerModule.h"
 using namespace std;
 
 bool action_deploy=false;
 bool action_remove=false;
 bool all=false;
+//list<Module> modules;
 
 void help()
 {
@@ -36,14 +37,9 @@ int main(int argc, char *argv[])
             cout << "Invalid argument. \n" << endl;
             exit(1);
         }
-        Services myServices=Services("../src/services.csv");
-        const Service * ptr_myService=myServices.findByID(1);
-        if (ptr_myService==nullptr){
-            cout<< "service not found"<<endl;
-        }else{
-            cout << "service found" << endl;
-            cout << *ptr_myService << endl;
-        }        
+
+        DockerModule dmodule;      
+        dmodule.isserviceOnServer();   
     }
     return 0;
 }