Have tried running that command (wget -qO- https://get.docker.com/ | sh) now and reports:
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
Seems like this has not worked to update docker.
Also seems to have caused entire site to crash, and cannot rebuild app reports:
Cannot connect to the docker daemon - verify it is running and you have access
After rebooting server site is back online.