Direct DevOps from Quality Thought

Image layers Articles Refer Here Refer Here Refer Here Storage Driver: Deals with layers How to preserve the data that is present in writable layer Identify the location Create a volume for that location Volume is a seperate space which can exist even after container is deleted. When recreating the container reuse the volume A… Continue reading DevOps Classroom notes 29/May/2026

Docker lifecycle Common docker commands A container is running and you want to see the logs docker logs <contaner-id or name> docker logs <contaner-id or name> -f Docker logs shows only stdout and stderr I want to delete all containers in my system docker rm -f $(docker ps -a -q) I want to delete all… Continue reading DevOps Classroom notes 27/May/2026

USER In linux machines, root user has full permissions, By default when you build image the user is going to root. Example FROM alpine:3 CMD ["sleep", "1d"] docker exec command can run a command in a running container docker exec test whoami docker exec -it test1 /bin/sh It is recommended to run you application as… Continue reading DevOps Classroom notes 26/May/2026