new: added ``$IMAGE_NAME`` and ``$CONTAINER_NAME`` for hooks.

bin/compose

@@ -782,6 +782,8 @@ run_service_hook () {
             cd "$CHARM_STORE/$charm"
 
             export SERVICE_NAME=$subservice
+            export IMAGE_NAME=$(echo "${PROJECT_NAME}" | tr -d "_-")_\${SERVICE_NAME}
+            export CONTAINER_NAME=\${IMAGE_NAME}_1
             export CHARM_NAME="$charm"
             export PROJECT_NAME=$PROJECT_NAME
             export DOCKER_BASE_IMAGE=$(service_base_docker_image "$charm")