diff --git a/regtests/Dockerfile b/regtests/Dockerfile
index c007d2c328..41ec4d0e52 100644
--- a/regtests/Dockerfile
+++ b/regtests/Dockerfile
@@ -46,7 +46,7 @@ RUN python3 -m venv /home/spark/polaris-venv && \
     . /home/spark/polaris-venv/bin/activate && \
     pip install -r /tmp/requirements.txt && \
     deactivate \
-RUN ./setup.sh
+    ./setup.sh
 
 COPY --chown=spark . /home/spark/regtests