diff --git a/Dockerfile b/Dockerfile
index 8deb09b..fd64b2f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -58,7 +58,7 @@ RUN ansible-galaxy install -r requirements.yaml \
 # dotfiles, see: https://git.mgrote.net/mg/dotfiles/raw/branch/master/scripts/setup_minimal.sh
 # hadolint ignore=DL3001
 RUN git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim \
-	&& git clone https://$GITUSER:$GITUSERPW:git.mgrote.net/mg/dotfiles ~/dotfiles \
+	&& git clone https://"$GITUSER":"$GITUSERPW"@git.mgrote.net/mg/dotfiles ~/dotfiles \
 	&& ln -s ~/dotfiles/.tmux.conf ~/.tmux.conf \
 	&& ln -s ~/dotfiles/.gitconfig ~/.gitconfig \
 	&& ln -s ~/dotfiles/.vimrc ~/.vimrc \