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The Customize Windows > Computer and Internet > Cloud Computing > Docker Tutorial For Beginners : Part 1

By Abhishek Ghosh July 14, 2017 12:23 pm Updated on July 14, 2017

Docker Tutorial For Beginners : Part 1

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Many users face issues to get started with Docker. Here is Docker tutorial for beginners. Containers provide a service oriented easy design. Current trend is to use Virtual Machines to run software applications. That is traditional virtualisation. Inside Virtual Machines applications run inside guest Operating System with virtual BIOS, virtual hardware powered by the server’s host OS and of course hardware. So each Virtual Machine has own kernel. Xen, KVM are typical example softwares for virtualization. OpenVZ virtualization uses no separate kernel for the guest OSes and that is why compared with Xen, KVM – Xen KVM versus OpenVZ. You can read about container virtualization and Docker with Linux kernel. You need to know about few concepts around IP address, ports, code dependencies and day to day things sysadmins typical used with. This amount of theory needed to know to use Docker. Rest is on getting started basic guide. With these components Part 1 of our Docker tutorial for beginners guide.

Docker Tutorial For Beginners - Part 1
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Docker Tutorial For Beginners :

 

Take that we are running Ubuntu 16.04 LTS operating system. You should be an user other than root with root privilege :

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sudo usermod -aG docker ${USER}
su - ${USER}
id -nG
# optionally add <your-username> user to Docker group
sudo usermod -aG docker your-username

Of course Docker installation package available in the official repository but may not be at the latest version.To install Docker, we will run :

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curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

Then add the Docker repository :

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sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

Next we will run some expected commands :

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sudo apt-get update
apt-cache policy docker-ce
# see output similar
sudo apt-get install -y docker-ce
sudo systemctl status docker

Docker installed and running. If we run :

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docker

We will view all available subcommands. Command format of Docker is like :

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docker [option] [command] [arguments]

hello-world is default test application :

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docker run hello-world

We can search for images on Docker Hub by using docker command, to search foo we will run:

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docker search foo

Docker Hub will return a list of all images when searched with valid name. We can download foo in this way :

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docker pull foo

then run a container using it:

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docker run foo

To see the images that have been downloaded :

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docker images

Let us go ahead with foo example Docker Image. If we combine -i and -t we will get interactive shell access into the container as root:

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docker run -it ubuntu

How you’ll use a real example like WordPress? Docker has documents for important images :

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https://docs.docker.com/samples/wordpress/

Tagged With docker ce tutorial , docker online tutorial , Docker tutorial 2017
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About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Orthopaedic Surgeon, Author and Blogger. You can keep touch with him on Google Plus - Abhishek Ghosh1 and on Twitter - @AbhishekCTRL.

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About This Article

Title: Docker Tutorial For Beginners : Part 1
July 14, 2017
Author: Abhishek Ghosh
Subjects: Cloud Computing, Computer and Internet
Is Part Of:

TheCustomizeWindows, July 14, 2017, Vol.1(01),
p.1–39075 [IoT Ready Journal]

Source:The Customize Windows
ISSN: 0019-5847 ;
E-ISSN: 0019-5847 ;
Publisher: jima.in

Cite this article as: Abhishek Ghosh, "Docker Tutorial For Beginners : Part 1," in The Customize Windows, July 14, 2017, April 27, 2018, https://thecustomizewindows.com/2017/07/docker-tutorial-beginners-part-1/.
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