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Doctor in which you use the simple set of filesystem layers or in simple words set of files you're not

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able to modify those files.

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You are able to only read them if you want to create a new image based on other image you could of course

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do that and add additional file system layers or additional files on top of existing doctor image but

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the doctor images are actually used for creation of containers.

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And picture is like this from single doctor in which you are able to create multiple containers and

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gain a quantity of containers that you could create from the same image depends only on the amount of

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resources you have on your Doctor Holst.

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That's all.

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All right let me quickly demonstrate you how you are able to create containers from a specific doctor

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image.

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For that you could use command doctor run and let me quickly create a container based on Bizzy books.

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Doctor image Dr Ron busy box and here at desk idea options and new container was created.

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I am inside of it and if I'll have a look at the containers that are currently running using Dr. P S

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command you'll see that there is no single Busy Box container.

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I could create one more container using same command dock around this busy box and let me run it in

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the ground as well like this.

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And if I at least container is now I'll see two different containers that are running at the moment

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but image is the same.

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It is busy box and that proves that you are able to create multiple containers from the same image and

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actually every container has so-called riots all layer.

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And that means that now you are able to modify container that does the training.

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For example you are able to create new file inside of the container.

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Let me do that here in this busy box container.

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Deitch file the DST and if I list files now here you will see file to the extent on the list and again

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does because containers are right.

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You are able to create and modify all files inside of container great.

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That's what is container.

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In short worlds and next.

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Let me explain you.

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What is a docker registry and what does dock a repository.

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I'll see you in the next lecture.

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Bye bye.