I just finished an amazing call.

[michel@mastodon.bsd.cafe]

@stefano well, it says Ubuntu on the image, doesn't it?

[mvilain@sfba.social]

@stefano The Dunning-Kruger is strong in this one. I asked a candidate what the difference is between a VM and Docker container. Interview ended shortly after that question.

[jana@social.jsteuernagel.de]

@stefano Reminds me of a person at work insisting that a container contains a full operating system.

So I made it a point at a previous presentation to show that a container can also just contain a single binary and nothing else.

[stefano@mastodon.bsd.cafe]

@bsdtv ahahah no, not the same referral.

[stefano@mastodon.bsd.cafe]

@freezr no...this was clearly leading to more problems than advantages

[akamran@indieweb.social]

@stefano I am not in any way, shape, or form a programmer or other type of computer toucher and even I know that isn't an OS, for heaven's sake!

[x_hace@mastodon.green]

@stefano

Did you try:

"Where do you want me to install docker host?"

[monospace@floss.social]

@stefano

[radio_azureus@ioc.exchange]

🦋💙❤️💋#WordsOfWisdom 💙💕🌹💐💙🦋

🦋💙❤️💋#SwitiLobi 💙💕🌹💐💙🦋

@stefano

[brunogirin@mastodon.me.uk]

@stefano @freezr Yes, it sounds like they are the type of customers who would question your every invoice.

[regendans@todon.eu]

@stefano Excellent👌

(And I am wondering now whether I would be tempted to say "I don't support DockerOS, bye" in such a case 😇)

[synlogic4242@social.vivaldi.net]

@mvilain @stefano TBF I think one common point of confusion comes from folks who get like Docker Desktop and run it like an app on Mac. by default on Mac if you "run" a Docker image the container runs under a Linux instance running on a VM. For total newbs its hard to make distinction between processes, containers, OS, hypervisors, VMs etc. blurs together. on Windows the UX might be similar. on Linux the Docker impl is much thinner because it doesnt need to add a full VM on top of the host.

Now add the complicating factor that many Linux instances reachable on the Internet may themselves be running on VMs rather than bare metal, etc

turtles all the way down

lots of newbs think Docker is an OS+VM when in reality its much thinner than that. its the Desktop/non-Linux versions

[frang@meow.social]

@mvilain @stefano "Do you _actually_ understand _anything_, or can we both go home now?"

[furicle@mastodon.social]

@stefano docker os, or DOS for short.
Invented by Steve Jobs right?

[strog@social.strog.org]

Theseus's Operating System:

If I swap out docker for nerdctl, ctr, etc. and later swap out containerd for CRI-O, youki, etc. then is it still Docker OS? 🙂

Funny how the container and host unames match. 😉

[yendolosch@23.social]

@stefano

> I told the guy that I couldn’t help him, since I'm not experienced enough with operating systems.

The only winning move is not to play.

[webhat@infosec.exchange]

@mvilain @stefano I was asked an interview question at an interview. Interviewer kept telling me I was explaining it wrong, and told me how it worked. I didn't get the job, obviously

I was a little confused, so when I got home, looked it up to make sure. And one would explain it in the way I explain it if one understands memory management, if one's never had to deal with memory management issues they explain it the way the interviewer explained it

The same when I was explaining how the threading model worked in a higher level programming language, at a different interview. They were convinced that it worked in the way the marketing materials said. Obviously the interviewer had never had to debug and step through the thread manager with a debugger. Didn't get that job either

[paul_ipv6@infosec.exchange]

@mvilain @stefano

docker has a better logo? <ducks rapidly>

yeah... the world doesn't need to be able to write low level device drivers in assembly but you should at least have a conceptual understanding of the stuff you use if that's your job.

[lispi314@udongein.xyz]

@stefano Said person sure bought the party line without scrutinizing it at all.

Even the Docker documentation makes no secret about how it works.

[feralhousewife@mastodon.social]

@stefano wow. I've been out of the business for over ten years and even I know that Docker has to run *on* something. Hilarious.