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docker buildx plugin

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  docker buildx plugin Geert Stappers <stappers@stappers.nl> - 2024-09-14 23:50 +0200
    Re: docker buildx plugin Geert Stappers <stappers@stappers.nl> - 2024-09-16 07:10 +0200
    Re: docker buildx plugin "Jonathan Dowland" <jmtd@debian.org> - 2024-09-16 17:40 +0200

#273086 — docker buildx plugin

Hello,

On a Bookworm system results `DOCKER_BUILDKIT=1 docker build .` in
a succesfull build.

On an unstable system results `DOCKER_BUILDKIT=1 docker build .` in
this output:
|ERROR: BuildKit is enabled but the buildx componet is missing or broken.
|       Install the buildx component to build images with BuildKit:
|       https://docs.docker.com/go/builds

That webpage says: "Buildx and BuildKit are both installed with Docker
Desktop and Docker Engine out-of-the-box."  It explains why the build
works on the Bookworm system. And says it should work on the unstable
system. But here we are ...


My websearch suggested there is package 'docker-buildx-plugin' and
package 'docker-buildx'.  "apt" can't find them.


What should be done to get the buildx component working?



Background information:
The Bookworm system:
|$ dpkg -l docker\* | grep ^ii | cut -b -60
|ii  docker-compose            1.29.2-3            all       
|ii  docker.io                 20.10.24+dfsg1-1+b3 amd64     
|$ docker --version
|Docker version 20.10.24+dfsg1, build 297e128
|$


On the unstable system:
|$ dpkg -l docker\* | grep ^ii | cut -b -60
|ii  docker-cli                26.1.5+dfsg1-2+b1 amd64       
|ii  docker-compose            1.29.2-6          all         
|ii  docker.io                 26.1.5+dfsg1-2+b1 amd64       
|$ docker --version
|Docker version 26.1.5+dfsg1, build a72d7cd
|$



Groeten
Geert Stappers
-- 
Silence is hard to parse

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#273098

On Sat, Sep 14, 2024 at 11:39:21PM +0200, Geert Stappers wrote:
> Hello,
> 
> On a Bookworm system results `DOCKER_BUILDKIT=1 docker build .` in
> a succesfull build.
> 
> On an unstable system results `DOCKER_BUILDKIT=1 docker build .` in
> this output:
> |ERROR: BuildKit is enabled but the buildx componet is missing or broken.
> |       Install the buildx component to build images with BuildKit:
> |       https://docs.docker.com/go/builds
> 
> That webpage says: "Buildx and BuildKit are both installed with Docker
> Desktop and Docker Engine out-of-the-box."  It explains why the build
> works on the Bookworm system. And says it should work on the unstable
> system. But here we are ...
> 
> 
> My websearch suggested there is package 'docker-buildx-plugin' and
> package 'docker-buildx'.  "apt" can't find them.
> 
> 
> What should be done to get the buildx component working?
> 

Knowing that `DOCKER_BUILDKIT=1 docker build .` works
on your Debian unstable system would help. It tells that
the problem is on my side.

 
> Background information:
> The Bookworm system:
> |$ dpkg -l docker\* | grep ^ii | cut -b -60
> |ii  docker-compose            1.29.2-3            all       
> |ii  docker.io                 20.10.24+dfsg1-1+b3 amd64     
> |$ docker --version
> |Docker version 20.10.24+dfsg1, build 297e128
> |$
 
The Bookworm machine was installed on a new computer,
it was always a Bookworm system.

 
> On the unstable system:
> |$ dpkg -l docker\* | grep ^ii | cut -b -60
> |ii  docker-cli                26.1.5+dfsg1-2+b1 amd64       
> |ii  docker-compose            1.29.2-6          all         
> |ii  docker.io                 26.1.5+dfsg1-2+b1 amd64       
> |$ docker --version
> |Docker version 26.1.5+dfsg1, build a72d7cd
> |$
> 

That system start as a Stretch system and at some point in time
upgrade to unstable.

What is more likely causing the 
|ERROR: BuildKit is enabled but the buildx componet is missing or broken.
the many upgrades or being an unstable system?


Groeten
Geert Stappers
-- 
Silence is hard to parse

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#273119

On Sat Sep 14, 2024 at 10:39 PM BST, Geert Stappers wrote:
> My websearch suggested there is package 'docker-buildx-plugin' and
> package 'docker-buildx'.  "apt" can't find them.

I speculate that the buildx component was formerly part of the upstream
project that is consumed by Debian's docker.io package (in the bookworm
era) and was later split out into a separate upstream project, that is
not (yet) packaged in Debian.

A quick search didn't turn up any Debian bugs for 'buildx' in the Debian
BTS for package: docker.io. If the functionality is broken > bookworm,
it would be worth filing a bug.

Docker-dot-com have their own distinct Docker packages, and their own
APT repository. The package 'docker-buildx-plugin' might exist in that.

> What should be done to get the buildx component working?

You could try switching from Debian's package of Docker to
Docker-dot-com's:

  https://docs.docker.com/engine/install/debian/

I can't vouch for it and I'd suggest considering the advice at 
<https://wiki.debian.org/DontBreakDebian> before adding another
APT repository to your system.

You could also take a look at Podman (a largely drop-in alternative
for Docker, also packaged) and see if it has the features you need.

-- 
Please do not CC me for listmail.

👱🏻	Jonathan Dowland
✎	 jmtd@debian.org
🔗	https://jmtd.net

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