diff --git a/Dockerfiles/forContainerNet/bootserver/Dockerfile b/Dockerfiles/forContainerNet/bootserver/Dockerfile
index 74e7a2e..70df60a 100644
--- a/Dockerfiles/forContainerNet/bootserver/Dockerfile
+++ b/Dockerfiles/forContainerNet/bootserver/Dockerfile
@@ -5,6 +5,7 @@ FROM node:buster
 RUN apt-get update && \
     apt-get install -y net-tools iputils-ping python-pip && \
     pip install flask && \
+    pip install requests && \
     mkdir mydir && \
     cd mydir
 
diff --git a/Dockerfiles/forContainerNet/bootserver/bootstrap_client.py b/Dockerfiles/forContainerNet/bootserver/bootstrap_client.py
index b8e9d5d..6e34c43 100755
--- a/Dockerfiles/forContainerNet/bootserver/bootstrap_client.py
+++ b/Dockerfiles/forContainerNet/bootserver/bootstrap_client.py
@@ -3,12 +3,16 @@ import os
 import subprocess
 import requests
 
+
+BOOTSTRAP_SERVER_ADDRESS = '10.10.10.10:5555'
+
 def retrieve_config():
     my_config = "None"
     my_ip = subprocess.check_output("sleep 5 && echo $MY_IP", shell=True).rstrip()
-    resp = requests.get("http://10.10.10.10:5555/getmyconfig/%s"%(my_ip))
+    resp = requests.get("http://%s/getmyconfig/%s"%(BOOTSTRAP_SERVER_ADDRESS, my_ip))
     my_config = resp.text
     if my_config != "None":
         subprocess.check_output("node /mydir/*.js %s"%(my_config), shell=True)
     #print("my_ip=%s and of type %s"%(my_ip,type(my_ip)))
 
+retrieve_config()
diff --git a/Dockerfiles/forContainerNet/device/Dockerfile b/Dockerfiles/forContainerNet/device/Dockerfile
index e86ad2e..1342c09 100644
--- a/Dockerfiles/forContainerNet/device/Dockerfile
+++ b/Dockerfiles/forContainerNet/device/Dockerfile
@@ -1,17 +1,11 @@
 # Choosing the image to use
 FROM node:buster
 
-# Defining variables to allow flexibility (each variable can be set directly within our topology deployment script)
-ENV local_ip=127.0.0.1
-ENV local_port=9001
-ENV local_name=dev1
-ENV remote_ip=127.0.0.1
-ENV remote_port=8282
-ENV remote_name=gwf1
-
 # Installing required libraries
 RUN apt-get update && \
-    apt-get install -y net-tools iputils-ping && \
+    apt-get install -y net-tools iputils-ping python-pip && \
+    pip install flask && \
+    pip install requests && \
     mkdir mydir && \
     cd mydir && \
     npm install express && \
@@ -20,11 +14,14 @@ RUN apt-get update && \
     npm install request && \
     wget http://homepages.laas.fr/smedjiah/tmp/device.js
 
-ENV LAUNCHER "node /mydir/device.js --local_ip '$local_ip' --local_port $local_port --local_name '$local_name' --remote_ip '$remote_ip' --remote_port $remote_port --remote_name '$remote_name' --send_period 3000"
+COPY bootstrap_client.py /mydir
 
-ENV VIM_EMU_CMD "nohup $LAUNCHER &"
-#ENV VIM_EMU_CMD_STOP "TODO at shutdown"
+SHELL ["/bin/bash", "-c"]
+
+RUN echo "nohup python /mydir/bootstrap_client.py &" > start.sh && \
+    echo "/bin/bash" >> start.sh && \
+    chmod 777 start.sh
 
 # Mandatory entrypoint in containernet
-CMD /bin/bash
+ENTRYPOINT ./start.sh
 
diff --git a/Dockerfiles/forContainerNet/device/bootstrap_client.py b/Dockerfiles/forContainerNet/device/bootstrap_client.py
new file mode 100755
index 0000000..6e34c43
--- /dev/null
+++ b/Dockerfiles/forContainerNet/device/bootstrap_client.py
@@ -0,0 +1,18 @@
+#!/usr/bin/python
+import os
+import subprocess
+import requests
+
+
+BOOTSTRAP_SERVER_ADDRESS = '10.10.10.10:5555'
+
+def retrieve_config():
+    my_config = "None"
+    my_ip = subprocess.check_output("sleep 5 && echo $MY_IP", shell=True).rstrip()
+    resp = requests.get("http://%s/getmyconfig/%s"%(BOOTSTRAP_SERVER_ADDRESS, my_ip))
+    my_config = resp.text
+    if my_config != "None":
+        subprocess.check_output("node /mydir/*.js %s"%(my_config), shell=True)
+    #print("my_ip=%s and of type %s"%(my_ip,type(my_ip)))
+
+retrieve_config()
diff --git a/Dockerfiles/forContainerNet/gatewayf/Dockerfile b/Dockerfiles/forContainerNet/gatewayf/Dockerfile
index 34fe8c4..658aea2 100644
--- a/Dockerfiles/forContainerNet/gatewayf/Dockerfile
+++ b/Dockerfiles/forContainerNet/gatewayf/Dockerfile
@@ -1,17 +1,11 @@
 # Choosing the image to use
 FROM node:buster
 
-# Defining variables to allow flexibility (each variable can be set directly within our topology deployment script)
-ENV local_ip=127.0.0.1
-ENV local_port=8282
-ENV local_name=gwf1
-ENV remote_ip=127.0.0.1
-ENV remote_port=8181
-ENV remote_name=gwi
-
 # Installing required libraries
 RUN apt-get update && \
-    apt-get install -y net-tools iputils-ping && \
+    apt-get install -y net-tools iputils-ping python-pip && \
+    pip install flask && \
+    pip install requests && \
     mkdir mydir && \
     cd mydir && \
     npm install express && \
@@ -20,11 +14,14 @@ RUN apt-get update && \
     npm install request && \
     wget http://homepages.laas.fr/smedjiah/tmp/gateway.js
 
-ENV LAUNCHER "node /mydir/gateway.js --local_ip '$local_ip' --local_port $local_port --local_name '$local_name' --remote_ip '$remote_ip' --remote_port $remote_port --remote_name '$remote_name'"
+COPY bootstrap_client.py /mydir
 
-ENV VIM_EMU_CMD "nohup $LAUNCHER &"
-#ENV VIM_EMU_CMD_STOP "TODO at shutdown"
+SHELL ["/bin/bash", "-c"]
+
+RUN echo "nohup python /mydir/bootstrap_client.py &" > start.sh && \
+    echo "/bin/bash" >> start.sh && \
+    chmod 777 start.sh
 
 # Mandatory entrypoint in containernet
-CMD /bin/bash
+ENTRYPOINT ./start.sh
 
diff --git a/Dockerfiles/forContainerNet/gatewayf/bootstrap_client.py b/Dockerfiles/forContainerNet/gatewayf/bootstrap_client.py
new file mode 100755
index 0000000..6e34c43
--- /dev/null
+++ b/Dockerfiles/forContainerNet/gatewayf/bootstrap_client.py
@@ -0,0 +1,18 @@
+#!/usr/bin/python
+import os
+import subprocess
+import requests
+
+
+BOOTSTRAP_SERVER_ADDRESS = '10.10.10.10:5555'
+
+def retrieve_config():
+    my_config = "None"
+    my_ip = subprocess.check_output("sleep 5 && echo $MY_IP", shell=True).rstrip()
+    resp = requests.get("http://%s/getmyconfig/%s"%(BOOTSTRAP_SERVER_ADDRESS, my_ip))
+    my_config = resp.text
+    if my_config != "None":
+        subprocess.check_output("node /mydir/*.js %s"%(my_config), shell=True)
+    #print("my_ip=%s and of type %s"%(my_ip,type(my_ip)))
+
+retrieve_config()
diff --git a/Dockerfiles/forContainerNet/gatewayi/Dockerfile b/Dockerfiles/forContainerNet/gatewayi/Dockerfile
index 477f777..658aea2 100644
--- a/Dockerfiles/forContainerNet/gatewayi/Dockerfile
+++ b/Dockerfiles/forContainerNet/gatewayi/Dockerfile
@@ -1,17 +1,11 @@
 # Choosing the image to use
 FROM node:buster
 
-# Defining variables to allow flexibility (each variable can be set directly within our topology deployment script)
-ENV local_ip=127.0.0.1
-ENV local_port=8181
-ENV local_name=gwi
-ENV remote_ip=127.0.0.1
-ENV remote_port=8080
-ENV remote_name=srv
-
 # Installing required libraries
 RUN apt-get update && \
-    apt-get install -y net-tools iputils-ping && \
+    apt-get install -y net-tools iputils-ping python-pip && \
+    pip install flask && \
+    pip install requests && \
     mkdir mydir && \
     cd mydir && \
     npm install express && \
@@ -20,11 +14,14 @@ RUN apt-get update && \
     npm install request && \
     wget http://homepages.laas.fr/smedjiah/tmp/gateway.js
 
-ENV LAUNCHER "node /mydir/gateway.js --local_ip '$local_ip' --local_port $local_port --local_name '$local_name' --remote_ip '$remote_ip' --remote_port $remote_port --remote_name '$remote_name'"
+COPY bootstrap_client.py /mydir
 
-ENV VIM_EMU_CMD "nohup $LAUNCHER &"
-#ENV VIM_EMU_CMD_STOP "TODO at shutdown"
+SHELL ["/bin/bash", "-c"]
+
+RUN echo "nohup python /mydir/bootstrap_client.py &" > start.sh && \
+    echo "/bin/bash" >> start.sh && \
+    chmod 777 start.sh
 
 # Mandatory entrypoint in containernet
-CMD /bin/bash
+ENTRYPOINT ./start.sh
 
diff --git a/Dockerfiles/forContainerNet/gatewayi/bootstrap_client.py b/Dockerfiles/forContainerNet/gatewayi/bootstrap_client.py
new file mode 100755
index 0000000..6e34c43
--- /dev/null
+++ b/Dockerfiles/forContainerNet/gatewayi/bootstrap_client.py
@@ -0,0 +1,18 @@
+#!/usr/bin/python
+import os
+import subprocess
+import requests
+
+
+BOOTSTRAP_SERVER_ADDRESS = '10.10.10.10:5555'
+
+def retrieve_config():
+    my_config = "None"
+    my_ip = subprocess.check_output("sleep 5 && echo $MY_IP", shell=True).rstrip()
+    resp = requests.get("http://%s/getmyconfig/%s"%(BOOTSTRAP_SERVER_ADDRESS, my_ip))
+    my_config = resp.text
+    if my_config != "None":
+        subprocess.check_output("node /mydir/*.js %s"%(my_config), shell=True)
+    #print("my_ip=%s and of type %s"%(my_ip,type(my_ip)))
+
+retrieve_config()
diff --git a/Dockerfiles/forContainerNet/server/Dockerfile b/Dockerfiles/forContainerNet/server/Dockerfile
index 2ec6ee3..501a0f1 100644
--- a/Dockerfiles/forContainerNet/server/Dockerfile
+++ b/Dockerfiles/forContainerNet/server/Dockerfile
@@ -1,14 +1,11 @@
 # Choosing the image to use
 FROM node:buster
 
-# Defining variables to allow flexibility (each variable can be set directly within our topology deployment script)
-ENV local_ip=127.0.0.1
-ENV local_port=8080
-ENV local_name=srv
-
 # Installing required libraries
 RUN apt-get update && \
-    apt-get install -y net-tools iputils-ping && \
+    apt-get install -y net-tools iputils-ping python-pip && \
+    pip install flask && \
+    pip install requests && \
     mkdir mydir && \
     cd mydir && \
     npm install express && \
@@ -17,11 +14,14 @@ RUN apt-get update && \
     npm install request && \
     wget http://homepages.laas.fr/smedjiah/tmp/server.js
 
-ENV LAUNCHER "node /mydir/server.js --local_ip '$local_ip' --local_port '$local_port' --local_name '$local_name'"
+COPY bootstrap_client.py /mydir
 
-ENV VIM_EMU_CMD "nohup $LAUNCHER &"
-#ENV VIM_EMU_CMD_STOP "TODO at shutdown"
+SHELL ["/bin/bash", "-c"]
+
+RUN echo "nohup python /mydir/bootstrap_client.py &" > start.sh && \
+    echo "/bin/bash" >> start.sh && \
+    chmod 777 start.sh
 
 # Mandatory entrypoint in containernet
-CMD /bin/bash
+ENTRYPOINT ./start.sh
 
diff --git a/Dockerfiles/forContainerNet/server/bootstrap_client.py b/Dockerfiles/forContainerNet/server/bootstrap_client.py
new file mode 100755
index 0000000..6e34c43
--- /dev/null
+++ b/Dockerfiles/forContainerNet/server/bootstrap_client.py
@@ -0,0 +1,18 @@
+#!/usr/bin/python
+import os
+import subprocess
+import requests
+
+
+BOOTSTRAP_SERVER_ADDRESS = '10.10.10.10:5555'
+
+def retrieve_config():
+    my_config = "None"
+    my_ip = subprocess.check_output("sleep 5 && echo $MY_IP", shell=True).rstrip()
+    resp = requests.get("http://%s/getmyconfig/%s"%(BOOTSTRAP_SERVER_ADDRESS, my_ip))
+    my_config = resp.text
+    if my_config != "None":
+        subprocess.check_output("node /mydir/*.js %s"%(my_config), shell=True)
+    #print("my_ip=%s and of type %s"%(my_ip,type(my_ip)))
+
+retrieve_config()