diff --git a/support/dot-build.env.dist b/support/dot-build.env.dist
index 8646bee..294490f 100644
--- a/support/dot-build.env.dist
+++ b/support/dot-build.env.dist
@@ -17,3 +17,4 @@ PRIVAREG=
 
 REGISTRY=pubdocker.univ-reunion.fr
 DIST=d12
+IMAGENAME=nulib/rundk
diff --git a/support/rundk b/support/rundk
index 70b2d9b..d6ca6c4 100755
--- a/support/rundk
+++ b/support/rundk
@@ -36,6 +36,9 @@ BUILDENV=
 # d12=php8.2, d11=php7.4, d10=php7.3
 DIST=
 
+# Nom de base de l'image (sans le registry)
+IMAGENAME=
+
 ################################################################################
 # Ne pas modifier à partir d'ici
 
@@ -46,6 +49,7 @@ DIST=
 [ -n "$BUILDENV0" ] || BUILDENV0=.build.env.dist
 [ -n "$BUILDENV" ] || BUILDENV=build.env
 [ -n "$DIST" ] || DIST=d12
+[ -n "$IMAGENAME" ] || IMAGENAME=nulib/rundk
 
 [ "$COMPOSERPHAR" == none ] && COMPOSERPHAR=
 [ "$BUILDENV0" == none ] && BUILDENV0=
@@ -120,13 +124,12 @@ if [ -z "$_RUNDK_IN_DOCKER" ]; then
 
     ## Charger ~/.dkbuild.env
 
-    APT_PROXY="$RUNDK_APT_PROXY"
-    APT_MIRROR="$RUNDK_APT_MIRROR"
-    SEC_MIRROR="$RUNDK_SEC_MIRROR"
-    TIMEZONE="$RUNDK_TIMEZONE"
-    PRIVAREG="$RUNDK_PRIVAREG"
-    REGISTRY="$RUNDK_REGISTRY"
-    IMAGE="$RUNDK_IMAGE"
+    APT_PROXY=
+    APT_MIRROR=
+    SEC_MIRROR=
+    TIMEZONE=
+    PRIVAREG=
+    REGISTRY=
     PROFILE=
     HOST_MAPPINGS=()
     function default_profile() {
@@ -184,8 +187,8 @@ if [ -z "$_RUNDK_IN_DOCKER" ]; then
     else
         UseRslave=1
     fi
-    IMAGENAME="nulib/rundk"
 
+    IMAGE=
     if [ -z "$bootstrap" ]; then
         if [ -n "$BUILDENV" -a -f "$PROJDIR/$BUILDENV" ]; then
             source "$PROJDIR/$BUILDENV" || exit 1