diff --git a/scripts/docker/install/rootless/rootless_user.sh b/scripts/docker/install/rootless/rootless_user.sh
index 7eeb5f1..b5b4de8 100755
--- a/scripts/docker/install/rootless/rootless_user.sh
+++ b/scripts/docker/install/rootless/rootless_user.sh
@@ -6,8 +6,13 @@ installDockerRootlessUser()
         if id "$CFG_DOCKER_INSTALL_USER" &>/dev/null; then
             isSuccessful "User $CFG_DOCKER_INSTALL_USER already exists."
         else
-            # If the user doesn't exist, create the user
-            local result=$(sudo useradd -s /bin/bash -d "/home/$CFG_DOCKER_INSTALL_USER")
+            # Create the rootless docker user. The login name (last arg) was
+            # missing, so useradd failed silently — masked by local result=$(...)
+            # — and the user never existed, breaking the whole rootless setup.
+            # -m makes its home; with SUB_UID/GID configured in login.defs,
+            # useradd also assigns its subordinate uid/gid ranges (needed for
+            # rootless). Run unmasked so checkSuccess sees real failures.
+            sudo useradd -m -s /bin/bash -d "/home/$CFG_DOCKER_INSTALL_USER" "$CFG_DOCKER_INSTALL_USER"
             checkSuccess "Creating $CFG_DOCKER_INSTALL_USER User."
             updateDockerInstallPassword;
         fi