Inital Testing

Suggestions on initial testing and running docker in general.

environment variables

Minimum should set DOCKER_HOST to the URL to your docker engine, even if its local. Use the port configured in docker.conf * port 2376 is the default for SSLS/TLS * port 2375 is the default for non-TLS

DOCKER_HOST=tcp://localhost:2376


# If using TLS set the following 
DOCKER_TLS_VERIFY=1
DOCKER_CERT_PATH=/home/dlee/.docker/machine/machines/default

# if not usign TLS =
DOCKER_TLS_VERIFY=0

Verify your configuration by restarting docker and running a symple command. For systemctl based systems:

systemctl daemon-reload
systemctl stop docker
ps -eaf | grep docker  ## Make sure its not still running
systemctl start docker

Note: 'systemctl restart docker' doesnt alway work – its beter to stop it and then verify its truly dead before restarting.

If there are no errors, then test by using 'docker info' first, then 'docker ps -a'. There will be no images or containers listed. Try a simple test run like

\$ docker run -it hello-world Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world 78445dd45222: Pull complete Digest:
sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7 Status:
Downloaded newer image for hello-world:latest

Hello from Docker! This message shows that your installation appears to be
working correctly.