Docker Host

Docker host is the machine that docker engine is installed.

Docker machine

List

docker-machine ls

docker-machine ls

=> 

NAME      ACTIVE   DRIVER       STATE   URL   SWARM   DOCKER    ERRORS
default   -        virtualbox   Saved                 Unknown

Create

docker-machine create

docker-machine create --driver virtualbox sample

=>

Running pre-create checks...
Creating machine...

(sample) Copying /Users/kei/.docker/machine/cache/boot2docker.iso to /Users/kei/.docker/machine/machines/sample/boot2docker.iso...
(sample) Creating VirtualBox VM...
(sample) Creating SSH key...
(sample) Starting the VM...
(sample) Check network to re-create if needed...
(sample) Waiting for an IP...

Waiting for machine to be running, this may take a few minutes...
Detecting operating system of created instance...
Waiting for SSH to be available...
Detecting the provisioner...
Provisioning with boot2docker...
Copying certs to the local machine directory...
Copying certs to the remote machine...
Setting Docker configuration on the remote daemon...
Checking connection to Docker...
Docker is up and running!
To see how to connect your Docker Client to the Docker Engine running on this virtual machine, run: docker-machine env sample




docker-machine ls

NAME      ACTIVE   DRIVER       STATE     URL                         SWARM   DOCKER        ERRORS
default   -        virtualbox   Saved                                         Unknown
sample    *        virtualbox   Running   tcp://192.168.99.100:2376           v18.05.0-ce

Run docker engine

docker-machine env

Run docker engine.

docker-machine env <docker engine name>

docker-machine env sample

=>

export DOCKER_TLS_VERIFY="1"
export DOCKER_HOST="tcp://192.168.99.100:2376"
export DOCKER_CERT_PATH="/Users/kei/.docker/machine/machines/sample"
export DOCKER_MACHINE_NAME="sample"


Set env variables on local machine
eval $(docker-machine env sample)

Deactivate docker engine

docker-machine env -u

docker-machine env -u