diff --git a/bin/docker/build_docker_images.sh b/bin/docker/build_docker_images.sh
index 2441801327..3a80bce232 100755
--- a/bin/docker/build_docker_images.sh
+++ b/bin/docker/build_docker_images.sh
@@ -54,7 +54,7 @@ hooks/build || exit 1
 # build otobo-elasticsearch
 export DOCKERFILE_PATH=otobo.elasticsearch.dockerfile
 export IMAGE_NAME=otobo-elasticsearch:$DOCKER_TAG
-export BUILD_PATH=.
+export BUILD_PATH=scripts/elasticsearch
 hooks/build || exit 1
 
 # build otobo-selenium-chrome
diff --git a/scripts/elasticsearch/README b/scripts/elasticsearch/README
new file mode 100644
index 0000000000..891f319cae
--- /dev/null
+++ b/scripts/elasticsearch/README
@@ -0,0 +1,2 @@
+This directory serves as the Docker build context for otobo.eleasticsearch.dockerfile.
+The dir is deliberately empty, because no files from OTOBO are needed for building that image.