Removed gulp-cli from docker image

Dockerfile

@@ -22,7 +22,6 @@ RUN apt-get -qq update && apt-get -qq install -y --no-install-recommends wget cu
     # Setup cron
     ln -s /webodm/nginx/crontab /var/spool/cron/crontabs/root && chmod 0644 /webodm/nginx/crontab && service cron start && chmod +x /webodm/nginx/letsencrypt-autogen.sh && \
     /webodm/nodeodm/setup.sh && /webodm/nodeodm/cleanup.sh && cd /webodm && \
-    npm install --quiet -g gulp-cli && \
     npm install --quiet -g webpack@4.16.5 && npm install --quiet -g webpack-cli@4.2.0 && npm install --quiet && webpack --mode production && \
     echo "UTC" > /etc/timezone && \
     python manage.py collectstatic --noinput && \