diff --git a/Dockerfile b/Dockerfile
index 1151264dc97f6..30a9bc0bc12f7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,6 +15,7 @@
 # limitations under the License.
 
 FROM python:3.6-slim
+SHELL ["/bin/bash", "-xc"]
 
 ENV AIRFLOW_HOME=/usr/local/airflow
 ARG AIRFLOW_DEPS="all"