Let's pull the ubuntu image with sshd service docker search sshd Just add a search argument, for example docker search ansible or docker search centos and check the output.
You should get a similar output, that speaks for itselfĦ) Pull a container image, that you will use to exprimentīy default docker hub includes a lot of different images, some of them contain a system with some application deployed, some are just some system images.ĭocker allows to search for images using special coommand docker search Your output should show new docker-ce repositoryģ) install docker-ce package yum install docker-ceĤ) start the docker process and confirm that it have started without a problem systemctl start dockerĥ) Confirm that your docker installation works, as expected Run wget -O /etc//docker-ce.repo Ĭonfirm that repo was added properly yum repolist If you share VPS server with someone, and it may be used by someone, better consult with them, to ensure you do not remove someone's valuable work :) If you have them, and do not know where did you get them from, you have never installed them, and you know that you do not user docker remove them with I will describe a process of installation a Community Edition docker from upstream official repository.ġ) Confirm that you do not have any old docker versionĪnd confirm that you have no other docker packages installed, for example from Centos repository. I prefer, and recommend to use upstream repository, since it is up to date, in sync and generally maintained well. There are also two ways of obtaning docker: Centos official repository and upstream official repository. For development purposes, and most cases, Community Edition is good enough, however if you consider using docker in high-scale commercial production environment, and require support, consider using Enterprise Edition. There are two branches of Docker: Enterpise Edition ( paid edition ) and Community Edition. PreprequisitesĢ) Basic Linux skills ( package installation, file editing, service control ) Installation In this guide i will describe how to install docker on your VPS, how to pull an image with a specific application inside and check that it performs as expected. It has a lot of features, that make deploy, installation, migration and maintenance of your application a much easier process. You can run multiple instances of such containers, each container fullfilling it's own role. In fact, it's not a virtualization technology, but a software to add an additional isolated layer inside the host OS. Docker is considered to be a modern container-based technology, that utilizes a cgroups and namespaces Linux technology.
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