[ale] Does anyone have any experience actually running Docker?

[Lightner, Jeffrey]

We've been using Docker on CoreOS here for more than a year but I'm not very familiar with it myself as another admin has done most of the work from our team.



However, looking for tutorial for CoreOS Docker led me to this link:
https://coreos.com/os/docs/latest/getting-started-with-docker.html



That in turn has links along the right side and at the bottom which will take you to various subjects at Docker itself.



RedHat also moved their "Atomic" container offering to Docker a year or so ago and are doing frequent updates.   One benefit they tout is that unlike the wild west style of repositories you get with other Docker implementation they vet the containers put in their repositories.   They are also updating those containers frequently based on the number of notifications we get.
I found this page on their site:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_atomic_host/7/html-single/getting_started_with_containers/


From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Scott Plante
Sent: Thursday, April 06, 2017 10:08 AM
To: kyle at txmoose.com; Atlanta Linux Enthusiasts
Subject: Re: [ale] Does anyone have any experience actually running Docker?


Did you go through the Getting Started tutorial on docker.com yet? When I went through it, it seemed pretty good. It looks like they have updated it as Docker has been changing (maturing?). I remember at first there was some confusion for me about the difference between creating an image and a container, and what is done in each of those phases. It all made more sense once I really understood the difference.

After the tutorial, I found it useful to go on hub.docker.com and search for applications I was interested in, and then look at how they did their Dockerfile configs. There are tons of examples--of course some are better than others and some contain worst practices, but there are a lot of ideas and the higher rated ones seem mostly pretty good.

I had the advantage of already seeing an hour presentation at the Devnexus conference. There are a bunch of similar ones out there on youtube, but as you noted some material is out of date.

Scott


--
Scott Plante, CTO
Insight Systems, Inc.
(+1) 404 873 0058 x104
splante at insightsys.com<mailto:splante at insightsys.com>
http://zyross.com


________________________________
From: "Kyle Brieden" <kyle at txmoose.com<mailto:kyle at txmoose.com>>
To: ale at ale.org<mailto:ale at ale.org>
Sent: Thursday, April 6, 2017 9:52:44 AM
Subject: [ale] Does anyone have any experience actually running Docker?

So I keep hearing just how awesome and wonderful and life-changing
Docker is, but no one online seems to want to actually tell me how to
USE it.  All the documentation I've found thus far either:

A) Makes assumptions about your environment, then fails to describe how
to translate concepts to other environments
B) Assumes you're already well versed in the basics, so starts at 80MPH
C) Was written in 2014 or earlier

I understand the concept, and I appreciate *why* containers are
fundamentally different than VMs, I just want to be able to actually
"Dockerize" an application.

I just want a MySQL container, a uWSGI/Django container, and an Nginx
container, but how do I go about getting those?  How do I get my code
into that container?  Is anyone a docker expert or does anyone have a "0
to 45MPH docker crash course?"  I'm not looking for full out
enterprise-ready production, here.  Just want to learn enough to get my
app off the ground on my own docker host, then understand enough to push
it up into something like AWS ECS or something.

Thanks!

---
Very respectfully,
Kyle Brieden
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