The document introduces Docker, emphasizing its role in operating-system-level virtualization through containerization for lightweight application management. It highlights the benefits of using Docker over virtual machines, such as consistent environments across development stages and ease of project setup without dependency installations. Additionally, it provides a cheatsheet with commands for managing Docker images, containers, and orchestration using Docker Compose.

1. Moving to Docker… finally!
Gaurav Gupta

2. What is Docker?
- Performs operating-system-level virtualization also known as
containerization
- Containers are isolated from each other and use their own set of tools and
libraries
- Run by a single operating system kernel and are therefore more lightweight
than virtual machines

3. Docker vs VM

4. Benefits
- Same environment on local, testing and production. No more “works on my
localhost”
- Isolates apps from each other
- Easy to get started on a new project. No need to install any dependencies.

5. Docker Cheatsheet
List images:
docker images ls
List containers:
docker ps
Download a docker image:
docker pull ubuntu
SSH into a running container:
docker attach <container id>
Detach from a container:
Ctrl p + Ctrl q (This is not as Ctrl p q )
Interact with a container:
docker run -t -i ubuntu /bin/bash

6. Using Dockerfile
Cheatsheet: docker build -t <image name> .

7. Orchestration using docker
compose
Cheatsheet: docker compose up / down

9. Kitematic
“For those who cannot give up GUI’s…”

10. “Today was your last day without
Docker”
:)