diff --git a/Dockerfile b/Dockerfile
index 7a376e2..a8fe617 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -222,8 +222,8 @@ ENV KERNEL_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-5.12
 ENV KERNEL_HEADERS_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-headers-5.12.14.arch1-1-x86_64.pkg.tar.zst
 ENV LIBGUESTFS_PACKAGE_URL=https://archive.archlinux.org/packages/l/libguestfs/libguestfs-1.44.1-6-x86_64.pkg.tar.zst
 
-# fixe ad hoc errors from using the arch museum to get libguestfs
-RUN tee -a /etc/pacman.conf <<< "RemoteFileSigLevel = Optional"
+# fix ad hoc errors from using the arch museum to get libguestfs
+RUN sudo sed -i -e 's/^\#RemoteFileSigLevel/RemoteFileSigLevel/g' /etc/pacman.conf
 
 RUN sudo pacman -Syy \
     && sudo pacman -Rns linux --noconfirm \
diff --git a/Dockerfile.auto b/Dockerfile.auto
index 5c7c6bd..aae6e2f 100644
--- a/Dockerfile.auto
+++ b/Dockerfile.auto
@@ -104,8 +104,8 @@ ENV KERNEL_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-5.12
 ENV KERNEL_HEADERS_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-headers-5.12.14.arch1-1-x86_64.pkg.tar.zst
 ENV LIBGUESTFS_PACKAGE_URL=https://archive.archlinux.org/packages/l/libguestfs/libguestfs-1.44.1-6-x86_64.pkg.tar.zst
 
-# fixe ad hoc errors from using the arch museum to get libguestfs
-RUN tee -a /etc/pacman.conf <<< "RemoteFileSigLevel = Optional"
+# fix ad hoc errors from using the arch museum to get libguestfs
+RUN sudo sed -i -e 's/^\#RemoteFileSigLevel/RemoteFileSigLevel/g' /etc/pacman.conf
 
 RUN sudo pacman -Syy \
     && sudo pacman -Rns linux --noconfirm \
diff --git a/Dockerfile.naked b/Dockerfile.naked
index 0c318b5..3d5e2ef 100644
--- a/Dockerfile.naked
+++ b/Dockerfile.naked
@@ -217,8 +217,8 @@ ENV KERNEL_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-5.12
 ENV KERNEL_HEADERS_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-headers-5.12.14.arch1-1-x86_64.pkg.tar.zst
 ENV LIBGUESTFS_PACKAGE_URL=https://archive.archlinux.org/packages/l/libguestfs/libguestfs-1.44.1-6-x86_64.pkg.tar.zst
 
-# fixe ad hoc errors from using the arch museum to get libguestfs
-RUN tee -a /etc/pacman.conf <<< "RemoteFileSigLevel = Optional"
+# fix ad hoc errors from using the arch museum to get libguestfs
+RUN sudo sed -i -e 's/^\#RemoteFileSigLevel/RemoteFileSigLevel/g' /etc/pacman.conf
 
 RUN sudo pacman -Syy \
     && sudo pacman -Rns linux --noconfirm \
diff --git a/Dockerfile.naked-auto b/Dockerfile.naked-auto
index aef3482..43dfdc5 100644
--- a/Dockerfile.naked-auto
+++ b/Dockerfile.naked-auto
@@ -84,8 +84,8 @@ ENV KERNEL_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-5.12
 ENV KERNEL_HEADERS_PACKAGE_URL=https://archive.archlinux.org/packages/l/linux/linux-headers-5.12.14.arch1-1-x86_64.pkg.tar.zst
 ENV LIBGUESTFS_PACKAGE_URL=https://archive.archlinux.org/packages/l/libguestfs/libguestfs-1.44.1-6-x86_64.pkg.tar.zst
 
-# fixe ad hoc errors from using the arch museum to get libguestfs
-RUN tee -a /etc/pacman.conf <<< "RemoteFileSigLevel = Optional"
+# fix ad hoc errors from using the arch museum to get libguestfs
+RUN sudo sed -i -e 's/^\#RemoteFileSigLevel/RemoteFileSigLevel/g' /etc/pacman.conf
 
 RUN sudo pacman -Syy \
     && sudo pacman -Rns linux --noconfirm \