diff --git a/Dockerfile b/Dockerfile
index 3846fef..056af1f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,4 +24,6 @@ RUN \
     gpg --import /usr/share/keyrings/ubuntu-archive-keyring.gpg && \
     cp $GNUPGHOME/pubring.kbx $GNUPGHOME/trustedkeys.kbx
 
+VOLUME /var/mirror
+
 EXPOSE 80