Bastian host docker unable to pull image

sync: Failed to init bastion hosterror
utils: Process exec error
arg: [“pull”,“”]
cmd: “docker”
output: “Using default tag: latest\nCannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?\n”

I was able to resolve this issue. Just need to make sure docker is installed on both Bastian and Pritunl Zero host