Typical workflow for starting docker on a new VM

docker-quickstart.sh

# install docker
sudo apt-get install docker
# the above command did not work (8/24/18); try the command below
sudo curl -sSL https://get.docker.com/ | sh

# pull nginx image
sudo docker pull nginx:1.10.0
sudo docker images

# verify the versions match
sudo dpkg -l | grep nginx

# if versions do not match, update the VM instance
sudo apt-get update
sudo apt-get install nginx

# run an instance of nginx (this can be executed multiple times to create multiple instances)
sudo docker run -d nginx:1.10.0

# check if it is up
sudo docker ps

# check how many instances are running
sudo ps aux | grep nginx

# show all (-a) instances running and only return numeric id (-q)
sudo docker ps -aq

# inspect an individual container
sudo docker inspect <cid>
# this will return a JSON object describing the container
# you can copy the IP address run curl to communicate with the container
curl 172.17.0.3
# this will return the default nginx page

# run the following to return the name and IP address of each container
sudo docker inspect -f '{{.Name}} - {{.NetworkSettings.IPAddress }}' $(sudo docker ps -aq)

# stop a container (<cid> is the container id)
sudo docker stop <cid>

# to remove all containers
sudo docker stop $(sudo docker ps -aq)

# remove a docker container from the system
sudo docker rm <cid>

# to remove all containers
sudo docker rm $(sudo docker ps -aq)


# Reference: Kubernetes Udacity Course (https://classroom.udacity.com/courses/ud615)