diff --git a/install.linux.sh b/install.linux.sh
index 24cce8a..381fcc2 100755
--- a/install.linux.sh
+++ b/install.linux.sh
@@ -1,16 +1,17 @@
 #!/bin/bash
 
 #Current version of libre.sh to be installed 
-LIBRE_VERSION=1.1
-# System env vars 
+LIBRE_VERSION=develop
+# System env vars  : can be overrided by a values.env file next to this install file
+
+
+### CONFIG : Specify you template repo ROOT without training slash (Optional) or comment if you want to supply full url for apps
+
+APP_REPO_URL="lab.libreho.st/libre.sh/compose"
 
 ## domain handling 
 
-### TODO : Specify you template repo ROOT 
-
-TEMPLATES_ROOT=lab.libreho.st/libre.sh/compose/ 
-
-### TODO : change to your domain vendor ( ovh , online, )
+### CONFIG : change to your domain vendor ( namecheap, ovh , scaleway, )
 DOMAIN_SERVER=namecheap
 
 ###  Namecheap specific
@@ -18,12 +19,19 @@ NAMECHEAP_URL="namecheap.com"
 NAMECHEAP_API_USER="pierreo"
 NAMECHEAP_API_KEY=
 
-### ovh specific 
+### ovh specific (WIP) 
 OVH_URL="eu.api.ovh.com"
 OVH_API_USER=""
 OVH_API_KEY=
 
 
+### Scaleway specific (WIP) 
+SCALEWAY_URL=""
+SCALEWAY_API_USER=""
+SCALEWAY_API_KEY=
+
+
+### TODO :  change your settings 
 IP="curl -s http://icanhazip.com/"
 FirstName="Pierre"
 LastName="Ozoux"
@@ -36,16 +44,26 @@ City="Lisbon"
 CountryCode="PT"
 ## Backup
 BACKUP_DESTINATION=root@xxxxx:port
+
+### CONFIG  : Change your mail settings.
 ## SMTP
 MAIL_USER=
 MAIL_PASS=
 MAIL_HOST=mail.indie.host
 MAIL_PORT=587
 
+# Default admin emails for apps
 
+ADMIN_EMAIL=support@ekimia.fr
+
+### TODO : source a setting file is present to override defaults
 
 echo "-------- Welcome to libre.sh $LIBRE_VERSION installer"
 
+echo "----  sourcing local values.env file if present"
+
+source values.env
+
 
 # STEP add kernel parameter
 
@@ -53,6 +71,20 @@ echo "-------- Welcome to libre.sh $LIBRE_VERSION installer"
 
 echo "-------- setting up system variables"
 
+echo "APP_REPO_URL=${APP_REPO_URL}" >> /etc/environment
+
+echo "LIBRE_VERSION=${LIBRE_VERSION}" >> /etc/environment
+
+echo "MAIL_USER=${MAIL_USER}" >> /etc/environment
+
+echo "MAIL_PASS=${MAIL_PASS}" >> /etc/environment
+
+echo "MAIL_HOST=${MAIL_HOST}" >> /etc/environment
+
+echo "MAIL_PORT=${MAIL_PORT}" >> /etc/environment
+
+echo "ADMIN_EMAIL=${ADMIN_EMAIL}" >> /etc/environment
+
 
 # STEP Install Docker 
 
@@ -98,3 +130,5 @@ cat > /etc/profile.d/libre.sh <<EOF
 export PATH=$PATH:/opt/bin
 EOF
 chmod 644 /etc/profile.d/libre.sh
+bash /etc/profile.d/libre.sh
+
diff --git a/utils/provision b/utils/provision
index eb9d772..b54d766 100755
--- a/utils/provision
+++ b/utils/provision
@@ -26,11 +26,13 @@ LOG_LEVEL="${LOG_LEVEL:-6}" # 7 = debug -> 0 = emergency
 # opts & defaults from. The parsing is unforgiving so be precise in your syntax
 read -r -d '' usage <<-'EOF'
   -u   [arg] URL to process. Required.
-  -a   [arg] Application to install. (in the form github.com/indiehosters/wordpress)
+  -a   [arg] Application to install. (in the form github.com/indiehosters/wordpress or wordpress in REPO_MODE)
+  -t   [arg] Checkout a specific tag or branch from the application repo. default to master
+  -e   [arg] Specify the email of the application admin 
   -s         Start the application right away.
   -b         Buys the associated domain name.
   -i         Configure OpenDKIM.
-  -c         Configures DNS on Namecheap.
+  -c         Configures DNS if possible.
   -d         Enables debug mode
   -h         This page
 EOF
@@ -103,10 +105,34 @@ function buy_domain_name () {
 }
 
 function application () {
-  git clone https://${arg_a}.git /data/domains/${arg_u}
+
+  #We check if a APP_REPO_URL was specified
+
+  if [ -z ${APP_REPO_URL:-} ]; then
+    warning "NO repo URL specified, using argument as full URL"
+    git_url=https://${arg_a}.git
+  else
+    warning "REPO specified, using argument as app name"
+    git_url=https://${APP_REPO_URL}/${arg_a}.git
+  fi
+  
+  #Define the tag/branch 
+  
+  git clone ${git_url} -b ${arg_t} /data/domains/${arg_u} 
+
   cd /data/domains/${arg_u}
+  
   if [ -f ./scripts/install ]; then
-    export URL=${arg_u}
+    #domain
+    export URL=${arg_u} 
+    #admin email
+    if [ -z "${arg_e}" ]; then
+      warning "No admin_email specified with -e , using default hoster email"
+    else
+      export ADMIN_EMAIL=${arg_e}
+      debug " admin email is ${ADMIN_EMAIL} "
+    fi
+
     if [ -z ${MAIL_DOMAIN:-} ]; then
       warning "you have no email server setup, we'll print a random configuration in your application. Make sure to check the parameters for your app to send proper emails."
       warning "To stop having this warning, please configure your libre.sh to be abble to create email accounts."
@@ -126,6 +152,7 @@ function application () {
   fi
 }
 
+
 function start () {
   systemctl start u@${arg_u}
   systemctl enable u@${arg_u}
@@ -201,6 +228,8 @@ fi
 
 [ -z "${arg_u}" ]     && help      "URL is required."
 [ -z "${LOG_LEVEL}" ] && emergency "Cannot continue without LOG_LEVEL."
+# tags/branch for modules 
+[ -z "${arg_t}" ]     && arg_t=master
 
 
 ### Runtime