diff --git a/Dockerfile b/Dockerfile
index fee1632..a0de1f1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM postgres
-COPY ./initdb.sh:/docker-entrypoint-initdb.d/initdb.sh
+COPY ./initdb.sh /docker-entrypoint-initdb.d/initdb.sh
 EXPOSE 5432
 VOLUME ["/var/lib/postgresql/data"]
 ENV POSTGRES_USER=$POSTGRES_USER