fix DL3046

Dockerfile

@@ -124,7 +124,7 @@ RUN curl -L -o /usr/local/bin/bfg.jar "https://repo1.maven.org/maven2/com/madgag
 # --- Configuración usuario ---
 ENV DOCKER_USER=coder UID=1000 GID=1000
 RUN groupadd -g $GID $DOCKER_USER && \
-    useradd -m -u $UID -g $GID -s /bin/bash $DOCKER_USER && \
+    useradd -l -m -u $UID -g $GID -s /bin/bash $DOCKER_USER && \
     echo "$DOCKER_USER ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers && \
     groupadd -f docker && usermod -aG docker $DOCKER_USER