WEBVTT

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-: In the last section we tried to answer the question,

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what is Docker?

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But we didn't really get a great explanation.

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We said, okay, it's a reference to a bunch of products.

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We then started to talk about something called an image

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and something called a container.

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At this point, we need to install

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some more software onto our machine

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so that you and I can work directly

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with images and containers

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so that we can get a better idea of how they work.

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So here's what you and I are going to do.

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We're going to be installing a piece of software

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called Docker for Windows, or Docker for Mac

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depending upon your operating system.

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Inside of this program are two very important tools

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that we're going to be making use of throughout this course.

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The first tool that's inside this package

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is something called the Docker client.

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The Docker client, also known as the Docker CLI

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is a program that you and I

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are going to interact with quite a bit from our terminal.

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We're going to enter in commands to our terminal,

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issue them to Docker client.

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It's gonna take our commands

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and figure out what to do with them.

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Now the Docker client itself

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doesn't actually do anything with containers or images.

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Instead, the Docker client is really just a tool

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or a portal of sorts to help us interact

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with another piece of software

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that is included in this Docker for Windows or Mac package

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called the Docker server.

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This is also frequently called the Docker Damon.

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This program right here is the actual tool

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or the actual piece of software

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that is responsible for creating containers, images,

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maintaining containers, uploading images,

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and doing just about everything you can possibly imagine

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around the world of Docker.

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So it's the Docker client that you and I issue commands to.

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It's a thing that we interact with.

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And behind the scenes,

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this client is interacting with the Docker server.

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You and I are never going to really reach directly

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out to this docker server.

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It's something that's just kind of running it

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behind the scenes.

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So again, we're gonna take a quick break right now.

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We're gonna come back to the next section

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and we're going to start installing this package

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so that we can get a better sense

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of how to work with images and containers.

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So quick break and I'll see you in just a minute.