How to Add an extension to knime Server
sudo -u knime /opt/knime-latest/knime -application org.eclipse.equinox.p2.director -nosplash
-consolelog -r https://update.knime.org/analytics-platform/{version_exe},https://update.knime.com/community-contributions/trusted/{version_exe}
-i <extension-identifier> -d /opt/knime/knime-latest