How to install buildx with docker 23.0.1

Question

I am trying to install buildx from docker doc. At first, I tried Install using a Dckerfile. I have to say, I have no clue how to install it with this steps, the instructions is very poor for this section. So I pick option Download manually.

I downloaded buildx-v0.10.2.darwin-amd64 binary, copy it to $HOME/.docker/cli-plugins and rename it as docker-buildx and make it executable:

$ ll $HOME/.docker/cli-plugins/docker-buildx
-rwxr-xr-x 1 root root 55984928 Feb 14 20:05 /root/.docker/cli-plugins/docker-buildx*

All this steps are from documentation.

As next step, I wanted to Set Buildx as the default builder. According to the docs, I shuld run docker buildx install but it raised and exception 'buildx' is not a docker command:

$ docker buildx install
docker: 'buildx' is not a docker command.
See 'docker --help'

The instructions are very unclear to me and dont know how to fix it. I found this but its basically the same steps so its do not help.

Can anybody help me to find out, whats I am missing?

$ uname -m
x86_64

Docker version 23.0.1, build a5ee5b1

Answer 1

On Debian you can install plugin package (see official install instructions):

apt install docker-buildx-plugin

similar on RedHat/CentOS:

yum install docker-buildx-plugin

similar on Arch Linux:

pacman -S docker-buildx

then run:

docker buildx install

or update /etc/docker/daemon.json with (and restart docker service:systemctl restart docker):

{
  "features": {
    "buildkit" : true
  }
}

Then docker info should be showing something like this:

$ docker info | head -n8
Client: Docker Engine - Community
 Version:    24.0.6
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.11.2
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx