To test a quick docker web app, with steps/code taken from https://docs.docker.com/compose/gettingstarted/

- from project directory, start up docker daemon (not sure why this isn't a service):

sudo dockerd

- bring up container (again from project dir, separate terminal):

sudo docker-compose up

- check http://localhost:5000/ to see if page loads, refresh to see counter incrementing

if dockerd comes back with an error the following command might be needed:
ps axf | grep docker | grep -v grep | awk '{print "kill -9 " $1}' | sudo sh
