Use long options in useradd (#1978)

Author: mathbunnyru

images/docker-stacks-foundation/Dockerfile

@@ -67,7 +67,7 @@ RUN sed -i 's/^#force_color_prompt=yes/force_color_prompt=yes/' /etc/skel/.bashr
 RUN echo "auth requisite pam_deny.so" >> /etc/pam.d/su && \
     sed -i.bak -e 's/^%admin/#%admin/' /etc/sudoers && \
     sed -i.bak -e 's/^%sudo/#%sudo/' /etc/sudoers && \
-    useradd -l -m -s /bin/bash -N -u "${NB_UID}" "${NB_USER}" && \
+    useradd --no-log-init --create-home --shell /bin/bash --uid "${NB_UID}" --no-user-group "${NB_USER}" && \
     mkdir -p "${CONDA_DIR}" && \
     chown "${NB_USER}:${NB_GID}" "${CONDA_DIR}" && \
     chmod g+w /etc/passwd && \

images/docker-stacks-foundation/start.sh

@@ -101,7 +101,7 @@ if [ "$(id -u)" == 0 ] ; then
         fi
         # Recreate the desired user as we want it
         userdel "${NB_USER}"
-        useradd --home "/home/${NB_USER}" --uid "${NB_UID}" --gid "${NB_GID}" --groups 100 --no-log-init "${NB_USER}"
+        useradd --no-log-init --home "/home/${NB_USER}" --uid "${NB_UID}" --gid "${NB_GID}" --groups 100 "${NB_USER}"
     fi
 
     # Move or symlink the jovyan home directory to the desired users home