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Welcome to the Docker user guide

In the Introduction you got a taste of what Docker is and how it works. In this guide we're going to take you through the fundamentals of using Docker and integrating it into your environment.

We’ll teach you how to use Docker to:

  • Dockerize your applications.
  • Run your own containers.
  • Build Docker images.
  • Share your Docker images with others.
  • And a whole lot more!

We've broken this guide into major sections that take you through the Docker life cycle:

Getting started with Docker Hub

How do I use Docker Hub?

Docker Hub is the central hub for Docker. It hosts public Docker images and provides services to help you build and manage your Docker environment. To learn more:

Go to Using Docker Hub.

Dockerizing applications: A "Hello world"

How do I run applications inside containers?

Docker offers a container-based virtualization platform to power your applications. To learn how to Dockerize applications and run them:

Go to Dockerizing Applications.

Working with containers

How do I manage my containers?

Once you get a grip on running your applications in Docker containers we're going to show you how to manage those containers. To find out about how to inspect, monitor and manage containers:

Go to Working With Containers.

Working with Docker images

How can I access, share and build my own images?

Once you've learnt how to use Docker it's time to take the next step and learn how to build your own application images with Docker.

Go to Working with Docker Images.

Linking containers together

Until now we've seen how to build individual applications inside Docker containers. Now learn how to build whole application stacks with Docker by linking together multiple Docker containers.

Go to Linking Containers Together.

Docker container networking

Links provides a very easy and convenient way to connect the containers. But, it is very opinionated and doesnt provide a lot of flexibility or choice to the end-users. Now, lets learn about a flexible way to connect containers together within a host or across multiple hosts in a cluster using various networking technologies, with the help of extensible plugins.

Go to Docker Networking.

Managing data in containers

Now we know how to link Docker containers together the next step is learning how to manage data, volumes and mounts inside our containers.

Go to Managing Data in Containers.

Working with Docker Hub

Now we've learned a bit more about how to use Docker we're going to see how to combine Docker with the services available on Docker Hub including Trusted Builds and private repositories.

Go to Working with Docker Hub.

Docker Compose

Docker Compose allows you to define a application's components -- their containers, configuration, links and volumes -- in a single file. Then a single command will set everything up and start your application running.

Go to Docker Compose user guide.

Docker Machine

Docker Machine helps you get Docker Engines up and running quickly. Machine can set up hosts for Docker Engines on your computer, on cloud providers, and/or in your data center, and then configure your Docker client to securely talk to them.

Go to Docker Machine user guide.

Docker Swarm

Docker Swarm pools several Docker Engines together and exposes them as a single virtual Docker Engine. It serves the standard Docker API, so any tool that already works with Docker can now transparently scale up to multiple hosts.

Go to Docker Swarm user guide.

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