diff --git a/cyclos/hooks/post_deploy b/cyclos/hooks/post_deploy
new file mode 100755
index 0000000..2f7fa6f
--- /dev/null
+++ b/cyclos/hooks/post_deploy
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+##
+## Get domain in option of relation "web-proxy"
+##
+
+## XXXvlab: there is a tiny lapse of time where database is not yet
+## installed, and admin password is the default value.
+
+
+. lib/common
+
+set -ex
+
+if url=$(named-relation-get "web-proxy" url); then
+    ## proxy ! so we probably already set up the url in
+    ## pre_deploy
+    exit 0
+fi
+
+container=$(get_running_containers_for_service "$SERVICE_NAME" | head -n 1)
+container_network_ip=$(get_docker_ip "$container")
+container_ip=${container_network_ip#*:}
+
+## XXXvlab: hard written duplicate value
+url="$container_ip:8080"
+
+CONTROL_URL_FILE="$SERVICE_DATASTORE/.control-url"
+## Was it already properly propagated to database ?
+control_url=$(H "${url}")
+if ! [ -e "$CONTROL_URL_FILE" ] || [ "$control_url" != "$(cat "$CONTROL_URL_FILE")" ]; then
+    ## In ``configurations`` table, columns login_url, logout_url, root_url
+
+    if ! sql < <(e "
+    UPDATE configurations
+    SET
+         root_url = 'http://$url'
+    "); then
+        debug "Failed to set root url."
+        exit 1
+    fi
+    e "$control_password" > "$CONTROL_URL_FILE"
+fi
diff --git a/cyclos/hooks/pre_deploy b/cyclos/hooks/pre_deploy
index 368192f..af809a5 100755
--- a/cyclos/hooks/pre_deploy
+++ b/cyclos/hooks/pre_deploy
@@ -43,8 +43,11 @@ fi
 
 
 
-url=$(named-relation-get "web-proxy" url) || exit 1
-
+if ! url=$(named-relation-get "web-proxy" url); then
+    ## no proxy, so we don't know our url, might want to do it in
+    ## post-deploy
+    exit 0
+fi
 
 ## In ``configurations`` table, columns login_url, logout_url, root_url
 if ! sql < <(e "