diff --git a/docker/Dockerfile.rel b/docker/Dockerfile.rel
index 2d3672c..90cefde 100644
--- a/docker/Dockerfile.rel
+++ b/docker/Dockerfile.rel
@@ -26,6 +26,7 @@ FROM alpine:latest
 RUN apk update && \
     apk add --no-cache \
         curl \
+        cron \
         libgcc \
         libpq \
         openssl && \
@@ -50,4 +51,4 @@ HEALTHCHECK \
     --retries=3 \
     CMD curl -q localhost:8000
 
-CMD ["/app/bin/server"]
+ENTRYPOINT ["/app/bin/server"]