Why Use Docker

We've made videos about Docker in the past, including our last video about setting up a local dev environment using Docker, Docker-Sync and Docker Compose. We wanted to take a step back and discuss why you should use Docker in the first place. In this short video, Tom Friedhof, a Solutions Architect at ActiveLAMP, will answer that very question.

Let us know what you think in the comments!

[MichaelChanslor]

Excellent video guys and great job on production of the video!

[JonathanCrossland]

The problem is not the potential benefits - but the huge learning curve and complexity that comes with building and managing.

[robinwilson]

Best video on why we use Docker in the internet. Thank you

[horisanemarivate]

By far the best video on the topic. Clear. Succinct. Well structured. Thanks so much 🙏

[justin]

Best overview of Docker that I've found. Thanks!

[haziriamin]

Great explanation. now i understand what docker is

[fabianrothfuchs]

Friedhof is German for cemetery. Thank you for your attention.

[ansonwoody]

very easy to understand comparing others

[MoustacheAlexander]

That next video didn't happen I guess.

[morikuldip]

thx for this video it helps me in the interview questions.

[marcelchaloupka]

What happened the the other videos in this series?

[MohammadAl-Khathlaan]

man the white background hurts the eye

[BoltThrower]

Docker Containers are usually not really smaller than a good designed VM. When you need multiple containers (like with Docker Compose) it becomes a mess and needs more space than a single VM + you still have no init system nor you can easily upgrade without rebuilding and deploying a docker container.



You still need VM's for your critical base infrastructure like DB's or shared storage systems. Without your base, docker is useless, at the end IT is orchestration of everything (not only Docker Containers). Some people forget that.

Everything has pros and cons.

[xorinzor]

Okay.. so docker is useful for scaling. But I still see a lot of people use docker on a single machine, where scaling isn't gonna happen.
Correct me if I'm wrong, but I'm pretty sure in that case Docker will just cause overhead and there's no point in using it.

[xizt]

Why would i put apps on multiple containers?
Why i dont just put php mysql in the same container?

[chuckitaway]

What happens if you replace the php container and the new one is full of bugs and doesn't work with the database? Is there any way to test without going live

[ИванЖалдкк]

I don’t get it. No one sane is doing it the way you describe. Say, I want to use AWS. I will have EC2 instance for my php, one web server for the front end. RDS for the db, S3 as a file system. I can put my ec2 under the elastic load balancer to scale automatically. I can use read replicas for db and so on. What do I get with docker? Why put a Docker engine with an image to my ec2 if I can put php there without docker?

[MrTigerstyle]

I like this guy. It seems scripted but he’s good either way.

[fluffingfluff]

Bro is talking to us as if he's about to pull out a gun... either way thanks for a concise and informative video... feedback: maybe smile more 🤣