diff --git a/Dockerfile b/Dockerfile
index 97534dc..e023e34 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,6 +8,7 @@ ENV UBUNTU_MIRROR_ARCHITECTURES amd64
 ENV UBUNTU_ENABLE_SOURCE_MIRRORING false
 ENV UBUNTU_MIRROR_CATEGORIES main,universe,restricted,multiverse,main/debian-installer
 ENV UBUNTU_MIRROR_UPSTREAM archive.ubuntu.com
+ENV UBUNTU_MIRROR_UPSTREAM_PATH /ubuntu
 ENV UBUNTU_MIRROR_PROJECTS bionic,bionic-updates,bionic-security,bionic-backports,focal,focal-updates,focal-security,focal-backports
 
 # The following is the URL populated in /mirrors.txt as used by mirror://
diff --git a/mirror/syncubuntu.sh b/mirror/syncubuntu.sh
old mode 100755
new mode 100644
index de9f73d..94126a9
--- a/mirror/syncubuntu.sh
+++ b/mirror/syncubuntu.sh
@@ -32,7 +32,7 @@ while [[ $DONE -eq 0 ]]; do
         --di-dist="$DIDIST" \
         --di-arch=arches \
         --ignore-small-errors \
-        -r /ubuntu \
+        -r "$UBUNTU_MIRROR_UPSTREAM_PATH" \
         --getcontents \
         --progress \
         --method=http \