docker-machine overview

Author: Yadav Lamichhane

intermediate/docker-machine/README.md

@@ -8,76 +8,80 @@ Docker machine is a tool which lets you to install docker engine in remote hosts
 
 You can install docker-machine in various flavours of linux operating system and since I am using fedora so this file contain installation steps required to install in it.  
 
-Install [Docker](https://docs.docker.com/install/)
+1. Install [Docker](https://docs.docker.com/install/)
 
-Execute the following command which download the docker-machine binary and put it into your $PATH. 
+2. Execute the following command which download the docker-machine binary and put it into your $PATH. 
 
-	```
-       	   base=https://github.com/docker/machine/releases/download/v0.16.0 &&
-	   curl -L $base/docker-machine-$(uname -s)-$(uname -m) >/tmp/docker-machine &&
-	   sudo mv /tmp/docker-machine /usr/local/bin/docker-machine &&
-	   chmod +x /usr/local/bin/docker-machine
+```
+base=https://github.com/docker/machine/releases/download/v0.16.0 &&
+curl -L $base/docker-machine-$(uname -s)-$(uname -m) >/tmp/docker-machine &&
+sudo mv /tmp/docker-machine /usr/local/bin/docker-machine &&
+chmod +x /usr/local/bin/docker-machine
+```
 
-	```
+3. Verify the installation
 
-Verify the installation
-
-	```
-	docker-machine version
-
-	``` 
+```
+docker-machine version
+``` 
 
 For installation of docker-machine in other operating systems, kindly follow the [Official Documentation](https://docs.docker.com/machine/install-machine/).
 
 ## Driver dependency
 
 For using docker-machine to create, use and manage the docker host locally, you should have virtualization driver installed in your system. There are different drivers availabe which supports docker-machine depending upon the type of virtualizaiton technology you use. For KVM, docker-machine use docker-machine-driver-kvm where as for Virtualbox it uses virtualbox driver. 
 
-KVM driver
+1. KVM driver
 
-	Configuring in RHEL/CentOS based system.  
+- Configuring in RHEL/CentOS based system.  
 
-	```
-		curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-centos7 \
-		> /usr/local/bin/docker-machine-driver-kvm \ 
-		chmod +x /usr/local/bin/docker-machine-driver-kvm 
-	```
+```
+curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-centos7 \
+> /usr/local/bin/docker-machine-driver-kvm \ 
+chmod +x /usr/local/bin/docker-machine-driver-kvm 
+```
 
-	Configuring in Debian based system. 
+- Configuring in Debian based system. 
 
-	```  
-		curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-ubuntu14.04 \
-		> /usr/local/bin/docker-machine-driver-kvm \ 
-		chmod +x /usr/local/bin/docker-machine-driver-kvm   
-	```
+```  
+curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-ubuntu14.04 \
+> /usr/local/bin/docker-machine-driver-kvm \ 
+chmod +x /usr/local/bin/docker-machine-driver-kvm   
+```
 
-VritualBox
+2. VritualBox
 
-	Virtualbox uses vboxdrv driver and installation is quite simple than that of KVM. Install virtualbox and you are all set to use docker-machine. 
+Virtualbox uses vboxdrv driver and installation is quite simple than that of KVM. Install virtualbox and you are all set to use docker-machine. 
 
 ## Provision of docker host locally
 
-To create docker host locally you can simply execute ```docker-machine create docker-vm-name```. This command go forward to create docker virtual machine locally on top of your hypervisor. You can also specify the particular driver for instantiating vm depending upon your requirements i.e.
+To create docker host locally you can simply execute ```docker-machine create docker-vm-name```. This command goes forward to create docker virtual machine locally on top of your hypervisor. In palce of docker-vm-name I've used vm1 for simplicity.  You can also specify the particular driver for instantiating vm depending upon your requirements, for e.g. to use virtualbox driver you can simply append ```virtualbox``` with ```-d``` as a driver option i.e.   
 
-	``` docker-machine create -d virtualbox docker_vm_name ```
+``` docker-machine create -d virtualbox vm1 ```
 
 You can create as many docker vm as per your requirements. You can use ``` docker-machine ls ``` command to list all the docker machines installed locally. This command also provides information of vm like name, status, driver, state, ip, etc.
 
-To start the stoped docker machine enter ``` docker-machine start docker_machine_name ```
+To start the stoped docker_machine, execute:
+
+``` 
+docker-machine start vm1 
+```
 
 ## Running containers on docker machine
 
-After creating docker machine you can execute command from the host system to the docker_machine_name. For this you need to connect your shell to the docker machine.i.e.  
+After creating docker machine you can execute command from the host system to the vm1. For this you need to connect your shell to the docker machine.i.e.  
 
-	```eval $(docker-machine env docker_vm_name)```
+```eval $(docker-machine env vm1)```
 
-Now you can simply execute the commands in newly created docker_docker_vm from your local system. i.e. 
+Now you can simply execute the commands in newly created docker_machine_vm from your local system. i.e. 
 
-	```docker run -it --security-opt seccomp:unconfined ubuntu /bin/bash```
+```
+docker run -it --security-opt seccomp:unconfined ubuntu /bin/bash
+```
 
-This command pull the ubuntu image in docker_machine_name from the docker reigistry and invoke bash terminal from it. 
+This command pull the ubuntu image in vm1 from the docker reigistry and invoke bash terminal from it. 
 
-You can switch between different docker_machine_vm with the help of ```eval``` command. 
+You can switch between different docker virtual machines with the help of ```eval``` command.