How to pull image from nigelpoulton/acg-web:0.1 repo ?

with this command docker image pull nigelpoulton/acg-web:0.1

you can also sign up on docker hub (its free)

and do the docker image build -t <yourusername>/appname:0.1

and then docker image push <yourusername>/appname:0.1

you will have to make sure you log in first ( in the terminal) I was doing this from the GCE Cloud Shell

now how does docker know how to do this : in the setting of docker it is defaulted to look for docker.hub first

for prod you will want to change it to your own internal repo but learning / fun / personal stuff its docker.hub all the way!

Hope this helps.