username

password

In this course, you’ll learn about containers, creating images, containerizing applications, and effectively deploying Docker in real-world scenarios.

Nigel Poulton - Docker Deep Dive- Part 1.png

test2.tar.gz

run_web_app

dockergit-copy

DockerfileUpdateNewVersion

DockerfileUpdateNewVersion_ReflectChanges

Containerisation_the Application  

User_testing

DDD_2

Containers have revolutionized the IT world, making it difficult to know where to begin. This course will take you from basics to proficiency step by step.
You’ll start by learning the basics of containers and how they work. Then, you’ll explore key concepts like images and the Docker engine. With the basics out of the way, you’ll learn how to containerize and run an application. After completing this course, you’ll be ready to use Docker in the real world.

Docker Guide for Beginners

# Summary of the Docker container commands

- `docker run` is the command to start new containers. We give it the name of an image, and it starts a container from it. For example, the `docker run -it ubuntu bash` command starts an interactive container from the Ubuntu image and runs the Bash shell.

- `Ctrl-PQ` is how we detach from a container stopping the process we’re attached to. We’ll use it frequently to detach from running containers without terminating them.

- `docker ps` lists all running containers, and we can add the `-a` flag to also see containers in the stopped `(Exited)` state.

- `docker exec` allows us to run commands inside containers. For example, the `docker exec -it <container-name> bash` command will start a new Bash shell inside a running container and connect your terminal to it. For this to work, the container must include the Bash shell. This command runs a `ps` command inside a running container without opening an interactive shell session: `docker exec <container-name> ps`.

- `docker stop` stops a running container and puts it in the `Exited (137)` state. It issues a SIGTERM to the container’s PID 1 process and allows the container 10 seconds to gracefully quit. If the process hasn’t cleaned up and stopped within 10 seconds, it sends a SIGKILL to force the container to immediately terminate.

- `docker restart` restarts a stopped container.

- `docker rm` deletes a stopped container. We can add the `-f` flag to delete the container without having to stop it first.

- `docker inspect` shows us the detailed configuration and runtime information about a container. 

- `docker debug` attaches a debug shell to a container or image and lets us run commands that aren’t available inside the container or image. It requires a Pro, Team, or Business Docker subscription.


Get a brief summary of the commands for managing Docker containers covered in this chapter.

About the Course

An Overview of Containers

Docker and Container-Related Standards and Projects

The Big Picture

The Docker Engine

Working with Images

Working with Containers

Containerizing an Application

Conclusion

Appendix: Getting Docker

Docker Containers: Key Commands

Summary of the Docker container commands