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Hello and welcome back.

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In this lesson we're going to learn what is an image.

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If we take a look at this picture we already know that this is a container which has two processes and

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that typically it only has one.

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But in this case we just created two that this process is in a sandbox which gives it a namespace and

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some say grips to control it.

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Right.

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But not a question is okay.

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This is a container.

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But how do I create a container that's not a good question.

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And then is where the concept of image comes into way.

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Then you may be wondering what is an image we can say that an image is a lot of layers in one who can

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pack the thing which has a parent and child relationship.

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So let me draw some things here.

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OK.

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So here on top of every single image inductor we have something called Scratch.

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So I think that is better if I just do something like D and I type scratch.

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Yes it's quite better.

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So we have an image which is called scratch and scratch is basically the base for every image that you

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are going to build inductor.

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So it's like the basics like an empty empty representation for the parts in the system.

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It's basically nothing but it's like the base that you need to use to start building images.

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Right.

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So you will always have this kind of base to scratch image will always be debate.

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Okay so now that we have these base you know that this is empty.

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So we need to put something on top of this.

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We need the basics of on the pardon system remember.

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Because in a person's system run processes.

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So we need something which is on the person's system.

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It could be centers that Vienna or Red Hat who've been to Alpine B.C. banks.

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Let's say that we're going to pick up basic bags.

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So I would use put here.

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One line.

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Let me just grab this which will represent that relationship the parent relationship between these guys

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because here we have this is the parent of this guy and this just means the line that binds it with

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the second layer or second level of hierarchy that we have here.

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So now let me just change the color here and I will put in order later in days which will be of course.

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I don't know B.C. Bucks were all pine whatever you want let's say busy bucks let's say centers vendor.

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Right.

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So on top of this is crunch image we have now this centers image which is kind of an operating system.

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It contains all of the libraries that are now operating system needs to run processes.

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Another we have this layer of a purge in the system where are you going to pick up again this line for

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relationship which should be great.

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I think we're going to put this line here and let's change the color again and we're going to put another

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layer on top of this layer in here.

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Let's say that we put some service some prices which will run in this guy which could be any process

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let's say an engine X or an Apache presses.

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So let's say Apache on top of this seat.

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That's pretty cool as you see here in an image.

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I'm just gonna put here the name of image because that's important image.

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Basically we've got our parent title relationship which starts from scratch and then on top of a scratch

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we paid an upgrade system and then on top of department system we put some processes which will run

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in this or burdens system.

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But if I change or if I modify these layering here of course these layer is also going to be modified

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because this is the parent of everything.

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But then at the same time this guy is the child of this but this guy is the parent of this guy.

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What happens if for example you want to put something in top of the Apache you're going to put in order

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relationship here and we're going to put another layer to this image which will be a Kashi service for

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example.

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And well this is basically that representation of how an image looks like how this colored on for an

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image.

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It starts from scratch then it gives you the basics for an apartment system that you can put on top

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of that layer.

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Some process and in top of this layer you can put an outer layer.

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But keep in mind that this guy is the parent of all of these guys.

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And days later is the print of all of this.

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And these later is the parent of all of this.

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So it's obvious that if I change this layer all of the child are going to be modified and if I change

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these later all of these subsequent layers are going to be modified.

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And by talking about this there comes up a new question which is then how do I build an image.

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And that is what we're going to learn in the next lesson.