π³ ΰ² _ΰ² in docker
Containerizing disappointment since 2013
π³ docker
π¦ moby
π docker
π³ moby
π You found the kernel!
Reality: It's turtles all the way down.
Exit code: β (container overflow)
Welcome to the wonderful world of Docker, where we solve the problem of "it works on my machine" by creating an infinite regress of machines that don't work anywhere.
"Docker is like a Russian nesting doll, but instead of dolls, it's problems all the way down."
β Anonymous DevOps Engineer, 3 AM
π§ Essential Docker Commands
docker run --rm -it ubuntu bash
Start a container you'll immediately forget how to exit
docker ps -a | grep -v CONTAINER | wc -l
Count your sins (stopped containers)
docker system prune -a --volumes --force
The nuclear option (pray you don't need those volumes)
docker-compose up -d
Start 47 containers to run one simple web app
docker exec -it container_name /bin/bash
Enter the nested nightmare (prepare to get lost)
docker run --privileged --pid=host -it alpine nsenter -t 1 -m -u -n -i sh
Break out of the container matrix (sometimes)
π₯ Docker Fun Facts
- Docker solves "works on my machine" by making nothing work on any machine
- Every Dockerfile starts simple and ends with 47 layers of technical debt
- The phrase "it's just a container" has ruined more production systems than any other
- Docker Hub is where images go to become mysteriously unavailable during deployments
- Moby Dick was actually about a DevOps engineer chasing the perfect container orchestration
- The real treasure was the disk space we wasted along the way
- Every container thinks it's the only container that matters
- Container escape vulnerabilities are just features for the determined
- The docker/moby directory structure is a recursive metaphor for containerization itself
- Building images is fast, debugging why they don't work is eternal
π The Container Philosophy
In the beginning, there was a VM. It was heavy and slow, but it worked. Then came containers - lightweight, fast, and ephemeral. Like a butterfly emerging from a cocoon, except the butterfly is on fire and the cocoon was also on fire.
Docker promised us reproducible environments, but instead gave us reproducible problems. The beauty of containers is that you can now fail consistently across all environments.
The nested docker/moby/docker/moby structure above isn't just art - it's a perfect representation of how container namespaces actually work. Each layer thinks it's the "real" system, blissfully unaware of the containers above and below it.
Eventually, if you go deep enough, you reach the host kernel - the one true source of truth. But by then, you've forgotten why you started this journey in the first place.
π Container Escape Sequence
If you've made it this far down the rabbit hole, here's how to get back to reality:
Ctrl+C- Stop what you're doingexit- Exit the current shelldocker stop $(docker ps -q)- Stop all containersdocker system prune -a --volumes- Clean up the mess- Take a walk - Remember what the sun looks like
- Question your life choices
- Return to your IDE and do it all again tomorrow
