diff --git a/spark/Dockerfile b/spark/Dockerfile
index 95c9df5..421762b 100644
--- a/spark/Dockerfile
+++ b/spark/Dockerfile
@@ -23,8 +23,9 @@
 COPY start-worker.sh /usr/local/bin/start-worker.sh
 
 ENV SPARK_HOME="$SPARK_INSTALL/spark" \
-    SPARK_LOCAL_IP="127.0.0.1" \
+    SPARK_LOCAL_IP="localhost" \
     SPARK_MASTER_PORT="7077" \
+    SPARK_MASTER="spark://$SPARK_LOCAL_IP:$SPARK_MASTER_PORT" \
     SPARK_MASTER_WEBUI_PORT="8080" \
     PYSPARK_PYTHON="/usr/local/bin/python3"