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SPEAKER 1: Yeah, hi.

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So I'm from India.

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And the question that
I wanted to ask is--

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for example, just yesterday, I
was doing Week 3 [INAUDIBLE],,

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and it took me three or four
hours just to set it up properly.

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And when I told the problem
to a senior of mine,

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what he told me is that you should
go for a dockerized environment.

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You should containerize
your app so that you're

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able to eliminate the force that
you have to do to set up environment

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variables and things like that.

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So is Docker the way forward?

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And are we going to see it and
[INAUDIBLE] course in the future?

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SPEAKER 2: Good question.

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Kareem, do you want to
take the first part?

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KAREEM: Yes, sounds great.

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So Docker is obviously one of the most
popular tools or technologies that have

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become very useful in the recent years.

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In fact, pretty much all of our
CSF feeds, what applications,

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are backed by Docker.

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And the [INAUDIBLE] idea
itself is backed by Docker.

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And it definitely makes a lot about the
process of developing an application

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or distributing an application
easier in that it allows you

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to what they call containerize
their application or sort of package

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it with all its dependencies
all the version that you need.

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So you don't have to
worry about, would it

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work on this system, would it work on
this machine, what's installed here,

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are there conflicting versions
of packages that are maybe

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required by other applications.

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All of that stuff goes away.

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That, of course, in addition
to what your friend alluded to,

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the Docker Hub, or the repository
registry of Docker images

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that exist online,
from what you can pull

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any number of looks sort of
premade Docker images for you.

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Among them is obviously
Postgres, MySQL, different Python

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versions, different versions
of other tools and packages.

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I personally use that.

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I think it's definitely worth
it to learn more about Docker

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and start using it.

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I think Brian, in his web
class, if I recall correctly,

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had one of the lecturers that introduced
maybe Docker and Docker Compose.

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Is that true, Brian?

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BRIAN: Yeah, we do.

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We try Docker.

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SPEAKER 2: Sorry.

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Brian?

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KAREEM: Yeah.

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BRIAN: Yes, we do introduce a little
bit of Docker and Docker Compose

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in the web programming class.

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KAREEM: Yeah, so I would definitely
take a look at that, for a start.

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Docker also-- I think the documentation,
the official documentation is great.

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And I'm sure there's a numerous
number of online tutorials

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that you can look at and sort of
get a sense of how Docker works

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or how to get started using it.

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SPEAKER 2: Indeed, and I know if you'd
like to make it easier to get started,

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I've just pasted into the chat window
a tool that we use here in CS50's team

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called CLI 50 for command
line interface 50.

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This essentially gives you what's
called a headless environment.

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So, no GUI.

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It's just the black and
white terminal window

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that connects to your own macro
PC so that you can run tools

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like you're trying to
on your own macro PC

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without setting everything up
manually yourself, like SQL light.

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And this is actually a
subset of what CS50 IDE is.

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So Kareem has built a Docker image
on top of this command line interface

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image that adds more GUI features
and other ITE-specific software.

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So as Kareen notes, we
use Docker for everything.

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Whether it makes it into CS50 I
think itself will depend on just

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how user friendly it gets.

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I think the reality is the
Docker is pretty easy to get up

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and running on Macs, at
least newer Macs nowadays.

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It's a little more of a
headache on certain PCs.

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And so that's not ideal,
I think, for some students

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to set up their own machines if they
run into technical support difficulties

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at the beginning of the class.

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But it's on our radar.

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And I would hope to answer
one of our earlier questions,

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too, at the same time--

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that this is one of the
kinds of technologies

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that will get better
and better over time

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and make it even easier for students
to use on their own machine.

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