make build/copy-output.sh pass shellcheck

build/copy-output.sh

@@ -19,7 +19,7 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
+KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
 source "${KUBE_ROOT}/build/common.sh"
 
 kube::build::verify_prereqs

hack/.shellcheck_failures

 ./build/common.sh
-./build/copy-output.sh
 ./build/lib/release.sh
 ./cluster/addons/addon-manager/kube-addons.sh
 ./cluster/addons/fluentd-elasticsearch/es-image/run.sh