A comprehensive introduction to Docker with a heavy focus on labs
About This Video
A comprehensive introduction to Docker with a heavy focus on labs
About This Video
In Detail
Docker is a tool which has greatly simplified the task of packaging your application, along with all its dependencies into lightweight, portable units called containers. These containers are platform independent and can be executed on any host which runs a Linux kernel. Docker is one of the hottest tools in the market right now as a lot of teams have learned how to use it to break up their large, monolithic applications into smaller and more manageable units - often called microservices. This has allowed development teams to work on microservices independently and package it into a container once it is ready. Docker has also eased the pain of DevOps teams who often need to manage the deployment processes and environments - since containers can run independently of each other, they can simply focus on deploying containers rather than worrying about dependencies for each application. Container orchestration tools such as Docker Swarm and Kubernetes have made it very easy to deploy microservices to a cluster and scale them according to demand. For these reasons, Docker is a technology which you need to know if you're an app developer or DevOps engineer.
Audience
Any app developer looking to make their applications portable and platform independent. DevOps engineers looking to simplify their CI/CD processes and deployment environments. Any professional who wishes to master Docker. Any individual looking to take and pass the Docker Certified Associate exam.
Chapter 1 : Introduction
You, This Course and Us
The Requirement: A Portable Application
The Solution: Containers
Making Containers: Introducing Docker
Chapter 2 : Docker Community Edition Installation
Exploring Docker’s Community and Enterprise Editions
Docker Toolbox vs Docker for Mac
Installation of Docker Toolbox
Installation of Docker on Ubuntu
Create your Docker ID
Verify your Docker Installation
Test your Docker Installation
Chapter 3 : Docker Images
Working With Docker: Images and Containers
The Format of a Dockerfile
The .dockerignorefile
The Escape Parser Directive
Our First Docker Image and Container
More Dockerfile Instructions: RUN, ENV, WORKDIR
Set the Container’s Starting Point: The ENTRYPOINT Instruction
Define a Build in a Base Image: The ONBUILD Instruction
Stop a Container Once its Work is done: The STOPSIGNAL Instruction
Share a Docker Image
Pushing an Image to a Dockerhub Repo
Another Way to Store Images: Saving to and Loading from .tar Files
Search for Docker Images: The Docker search Command
Examine your Image: The Docker inspect Command
Cleaning up Images: Remove Unused and Dangling Images with Docker prune
Deleting an Image: The Docker image rm command
Chapter 4 : Docker Containers
Container Basics: Create, Start and Stop
Restarting a Container: The Docker restart Command
Connect to a Container: The Docker attach Command
Interacting with a Container: The Docker exec Command
Examine your Container Using Docker inspect
Debugging a Container: View Container Logs
More Debugging: View Processes of a Running Container
Cleaning up Containers: Remove Unused Containers with Docker prune
Remove Specific Containers using Docker rm
Dealing with a Zombie Container: The Docker kill Command
Renaming a Docker Container
What has Changed in my Container?: The Docker container diff Command
Saving the Container State: The Docker container commit Command
Mapping Container Ports to its Host
Putting it together: From Dockerfile to an NGINX App
Chapter 5 : Storage in Docker
Managing Data in Docker
Understanding Volumes
Understanding Bind Mounts
Understanding tmpfs Mounts
Create a Volume
Start a Container with a Volume
Attach a Read-Only Volume to a Container
Inspecting Details of a Volume
Cleaning up Volumes: Prune Unused Volumes
Observing Changes to a Volume
Start a Container with a Bind Mount
Start a Container with a tmpfs Mount
Chapter 6 : Container Orchestration with Docker Swarm
Introducing Container Orchestration and Docker Swarm
Preparing a Cluster: Provision the Nodes of the Swarm
Create the Swarm: Set up the Master and Worker Nodes
Deploy a Service in the Swarm
Scaling Our Service
Inspecting the Nodes in a Swarm
Take a Swarm Node Offline: Drain a Worker
Update and Remove a Swarm Service
Global Services: Deploy App to All Nodes in a Swarm
Protect Sensitive Data: Creating Secrets
Removing Nodes from a Docker Swarm
Alter the Swarm Hierarchy - Promoting and Demoting Swarm Nodes
Chapter 7 : Docker Networks
The Different Network Drivers in Docker
Create a Bridge Network
Containers and Networks: Connecting and Disconnecting
Inspect a Network
The Network for Swarms: Creating an Overlay Network
Creating a Host Network
Network Cleanup: Pruning and Removing Networks
Chapter 8 : Docker’s Enterprise Edition and the Universal Control Plane (UCP)
Installing Docker EE on Ubuntu
Installing Universal Control Plane (UCP) on Ubuntu
Who Uses Docker: Creating Users and Teams in UCP
What Users Can Do: Granting Permissions
Create Docker Objects in UCP: Creating a Volume from the Web UI
Chapter 9 : The Docker Trusted Registry (DTR)
DTR Installation
Create a DTR Repo
Pushing to and Pulling from DTR
Delete Image from a DTR Repo
Users and Teams in DTR
Setting Permissions in DTR
Chapter 10 : The Docker Certified Associate Exam
The DCA Exam
Exam Curriculum