need to call /build for herokuish

plugins/00_dokku-standard/commands

@@ -24,7 +24,7 @@ case "$1" in
         # https://github.com/progrium/dokku/issues/896 & https://github.com/progrium/dokku/issues/906
         DOCKER_ARGS=$(: | pluginhook docker-args $APP build)
         DOCKER_ARGS+=$(: | pluginhook docker-args-build $APP)
-        id=$(docker run -d -v $CACHE_DIR:/cache -e CACHE_PATH=/cache $DOCKER_ARGS $IMAGE /build/builder)
+        id=$(docker run -d -v $CACHE_DIR:/cache -e CACHE_PATH=/cache $DOCKER_ARGS $IMAGE /build)
         docker attach $id
         test "$(docker wait $id)" -eq 0
         docker commit $id $IMAGE > /dev/null

plugins/ps/functions

@@ -6,7 +6,7 @@ release_and_deploy() {
   source "$(dirname $0)/../common/functions"
   local APP="$1"; local IMAGE="dokku/$APP"
 
-  if [[ -f "$DOKKU_ROOT/$APP/CONTAINER" ]]; then
+  if verify_image "$IMAGE"; then
     if is_image_herokuish_based "$IMAGE"; then
       IMAGE_SOURCE_TYPE="herokuish"
     else