Docker: fix missing ros command. (#2090)

scripts/docker_adduser.sh

@@ -23,9 +23,9 @@ adduser --disabled-password --force-badname --gecos '' "$DOCKER_USER" \
 usermod -aG sudo "$DOCKER_USER"
 echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
 cp -r /etc/skel/. /home/${DOCKER_USER}
+echo "export PATH=/apollo/scripts:$PATH" >> /home/${DOCKER_USER}/.bashrc
 echo 'if [ -e "/apollo/scripts/apollo_base.sh" ]; then source /apollo/scripts/apollo_base.sh; fi' >> "/home/${DOCKER_USER}/.bashrc"
 echo "ulimit -c unlimited" >> /home/${DOCKER_USER}/.bashrc
-echo "export PATH=/apollo/scripts:$PATH" >> /home/${DOCKER_USER}/.bashrc
 
 chown -R ${DOCKER_USER}:${DOCKER_GRP} "/home/${DOCKER_USER}"