DevOps Classroom notes 19/Jun/2025

Basic container operations

• Creating a docker container in docker playground for this we need to create account in docker hub
• Container lifecycle
  
• Container operations
  • Create
  • start
  • run (create + start)
  • stop
  • pause
  • unpause
  • remove/delete
• docker cheatsheet
• Create a container and start it

docker container run -d httpd:latest

docker run -d httpd:latest

* To list all the running containers

docker ps
docker container ls

• Every container when created gets a unique container id and if you have not passed the name docker randomly assigns a name
• So lets create a container with a name

docker container run -d httpd:latest
docker run -d httpd:latest

* To manage the container we can pass container id or name
* Lets stop a container

docker stop <container-id|name>
docker container stop <container-id|name>

* lets start the containers

* Let try removing the container

Examine containers

• Lets create two containers web1 and web2
  
  
• watch classroom recording for remaining examination.

Exercise:

1. What happens when you start a linux machine in terms of processes what gets launched first