diff --git a/Dockerfile b/Dockerfile
index 9e80076..1cd2467 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:40
+FROM registry.fedoraproject.org/fedora:40
 
 LABEL maintainer="TechTransThai" \
       description="Fedora image for BOINC client."
@@ -19,5 +19,6 @@ EXPOSE 31416
 
 # Install
 RUN dnf install boinc-client -y
+RUN dnf clean all
 
 CMD ["start-boinc.sh"]