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Re: Docker Hub requires nonfree software to log in

From: Ted Zlatanov
Subject: Re: Docker Hub requires nonfree software to log in
Date: Tue, 31 Jan 2017 09:31:25 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux)

On Mon, 30 Jan 2017 22:34:23 -0500 Richard Stallman <address@hidden> wrote: 

>> I think you're confusing two things: Docker Hub as a web site (which
>> requires nonfree software to use during *setup*) and Docker Hub as an
>> image repository (which requires nothing but Docker itself, it's like a
>> package repository with automated builds per package). They may talk to
>> the same backend databases, but they are not the same thing.

RS> This is the first I heard of the distinction.

I think many of us assumed we were talking about the same thing. Sorry
if I added to the confusion.

RS> A concrete practical question: does it work to prepare and upload
RS> images without running nonfree JS code?

RS> If so, we can go ahead and upload images.

Yes, correct. Just think of it as a package repository with automated
builds. You can upload your own package, built locally. That's what we
may do for the Guix images, if the Guix developers are interested.

>> Building an alternative to Docker Hub is an interesting proposition, but
>> not a blocker to this work.

RS> That seems to be a misunderstanding -- I didn't propose we do that,
RS> only that we distribute our Emacs images from some FSF server.  The
RS> image is just a file, right?

Docker images are distributed as checksummed (and optionally signed)
layers, so you don't have to download layers you already have locally.
They can also be distributed as archives but that's a lot more expensive
because all the layers have to be downloaded. So it's a little more
complicated than just serving files.

RS> So we can distribute it any way that we distribute other files, right?

We can distribute archives as files, but that's suboptimal.

We can also set up a FSF Docker repository that serves checksummed
signed layers just like Docker Hub. It would be a nice Savannah add-on.
But it's not a blocker to putting Emacs on Docker Hub, since the
"official GNU Emacs Docker image" can live in multiple places, and the
goal is to make it available to the users.


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