diff --git a/Vagrantfile b/Vagrantfile
index e3af2f8..8fef620 100755
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -4,11 +4,11 @@
 # Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
 VAGRANTFILE_API_VERSION = "2"
 
-NETWORK = "192.168.33."
+NETWORK = "10.0.3."
 
 HOSTS = {
-   "ynh-dev" => ["83", "stretch-unstable"],
-   "ynh-dev-buster" => ["84", "buster-unstable"],
+   "ynh-dev" => ["83", "ynh-dev"],
+   "ynh-dev-buster" => ["84", "ynh-dev-buster"],
 }
 
 Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
@@ -25,7 +25,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
       machine.vm.guest = :debian
 
       machine.vm.provider "lxc" do |lxc|
-        config.vm.box_url = "https://build.yunohost.org/yunohost-" + version + "-lxc.box" 
+        config.vm.box_url = "https://build.yunohost.org/" + version + "-lxc.box" 
         config.vm.synced_folder ".", "/ynh-dev", id: "vagrant-root"
         config.vm.network :private_network, ip: NETWORK + ipaddr, lxc__bridge_name: 'lxcbr0' 
       end
diff --git a/deploy.sh b/deploy.sh
index 0bd536f..abe70c8 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -8,7 +8,7 @@ set -x
 
 sudo apt-get install vagrant lxc git -y
 
-git clone https://github.com/YunoHost/ynh-dev
+git clone https://github.com/alexAubin/ynh-dev
 cd ./ynh-dev
 git clone https://github.com/YunoHost/moulinette
 git clone https://github.com/YunoHost/yunohost
diff --git a/prebuild/prebuild.sh b/prebuild/prebuild.sh
index f115272..99aaeb7 100755
--- a/prebuild/prebuild.sh
+++ b/prebuild/prebuild.sh
@@ -1,23 +1,19 @@
 #!/bin/bash
 
-DEBIAN_VERSION="stretch"
-YNH_VERSION="unstable"
-PROVIDER="lxc"
-
 # Compute box name
-BOX="$DEBIAN_VERSION-$YNH_VERSION"
+BOX="ynh-dev"
 
 # Create box
-vagrant up $BOX --provider $PROVIDER
+vagrant up $BOX
 
 # Package box
-vagrant package $BOX  --output /tmp/yunohost-$BOX-$PROVIDER.box
+vagrant package $BOX --output /tmp/$BOX.box
 
 # Destroy current box
 vagrant destroy $BOX
 
 # User message, and exit
 echo ""
-echo "Your Vagrant box was packaged to /tmp/yunohost-$BOX-$PROVIDER.box"
-echo "You might want to run : vagrant box add "yunohost/$BOX" /tmp/yunohost-$BOX-$PROVIDER.box"
+echo "Your Vagrant box was packaged to /tmp/$BOX.box"
+echo "You might want to run : vagrant box add 'yunohost/ynh-dev' /tmp/$BOX.box"
 exit
diff --git a/ynh-dev b/ynh-dev
index 19dbf98..bdd943e 100755
--- a/ynh-dev
+++ b/ynh-dev
@@ -4,32 +4,21 @@ readonly THISSCRIPT=`basename $0`
 
 function show_usage() {
     cat <<EOF
-Usage :
 
-    On the host
-    ===========
+  ${BLUE}On the host, to manage the LXC${NORMAL}
+  ${BLUE}==============================${NORMAL}
 
-    $THISSCRIPT start
-        (Create and) starts the ynh-dev LXC
+  start           (Create and) starts the ynh-dev LXC
+  ssh             SSH into an already started ynh-dev LXC
+  destroy         Destroy the ynh-dev LXC
+  rebuild         Rebuild a fresh, up-to-date box
 
-    $THISSCRIPT ssh
-        SSH into an already started ynh-dev LXC
+  ${BLUE}Inside the dev instance${NORMAL}
+  ${BLUE}=======================${NORMAL}
 
-    $THISSCRIPT destroy
-        Destroy the ynh-dev LXC
-
-    $THISSCRIPT rebuild
-        Rebuild a fresh, up-to-date box
-
-    Inside the vm
-    =============
-
-    $THISSCRIPT ip
-        Give the ip of the guest container
-    $THISSCRIPT use-git [PACKAGES [PACKAGES ...]]
-        Use Git repositories from dev environment path
-    $THISSCRIPT test [PACKAGES [PACKAGES ...]]
-        Deploy, update and run tests for some packages
+  ip              Give the ip of the guest container
+  use-git [PKG]   Use Git repositories from dev environment path
+  test [PKG]      Deploy, update and run tests for some packages
 
 EOF
 }
@@ -39,6 +28,8 @@ function main()
     local ACTION="$1"
     local ARGUMENTS="${@:2}"
 
+    [ -z "$ACTION" ] && show_usage && exit 0
+
     case "${ACTION}" in
 
         help|-h|--help)            show_usage     $ARGUMENTS ;;
@@ -122,25 +113,26 @@ function create_sym_link() {
 
 function start_ynhdev()
 {
-    BOX_NAME="yunohost/strech-unstable"
-    BOX_URL="https://build.yunohost.org/yunohost-$BOX_NAME-lxc.box"
+    local BOX_NAME="yunohost/ynh-dev"
+    local BOX_URL="https://build.yunohost.org/yunohost-$BOX_NAME-lxc.box"
 
+    set -eu
     # Download box if not available
     if ! vagrant box list | grep -qc $BOX_NAME ; then
         info "Vagrant box '$BOX_NAME' is missing. Trying to download it"
-        vagrant box add $BOX_NAME $BOX_URL --provider $PROVIDER
+        vagrant box add $BOX_NAME $BOX_URL
     fi
 
     # Run VM
-    vagrant up ynh-dev --provider lxc
+    vagrant up ynh-dev
 
     # Log into the VM
-    vagrant ssh ynh-dev -c "sudo -i"
+    ssh_ynhdev
 }
 
 function ssh_ynhdev()
 {
-    vagrant ssh ynh-dev -c "sudo -i"
+    vagrant ssh ynh-dev -c "echo 'You are now inside the LXC !'; cd /ynh-dev; sudo su"
 }
 
 function destroy_ynhdev()
@@ -148,6 +140,29 @@ function destroy_ynhdev()
     vagrant destroy ynh-dev
 }
 
+function rebuild_ynhdev()
+{
+    local BOX="ynh-dev"
+
+    set -x
+    cd prebuild
+
+    # Create box
+    vagrant up $BOX
+
+    # Package box
+    vagrant package $BOX --output /tmp/$BOX.box
+
+    # Destroy current box
+    vagrant destroy $BOX
+
+    set +x
+
+    # User message, and exit
+    info "The Vagrant box was packaged to /tmp/$BOX.box"
+    info "You might want to run : vagrant box add 'yunohost/ynh-dev' /tmp/$BOX.box"
+}
+
 function show_vm_ip()
 {
     assert_inside_vm