The requested image's platform (linux/arm64/v8) does not match the detected host platform (linux/amd64) and no specific platform was requested

Question

My server and docker info. are as follows:

Linux xxx 3.10.0-1160.66.1.el7.x86_64 #1 xxx x86_64 x86_64 x86_64 GNU/Linux

Docker version 20.10.17

Client:
 Context:    default
 Debug Mode: false
 Plugins:
  app: Docker App (Docker Inc., v0.9.1-beta3)
  buildx: Docker Buildx (Docker Inc., v0.8.2-docker)
  scan: Docker Scan (Docker Inc., v0.17.0)

Server:
 Server Version: 20.10.17
 Kernel Version: 3.10.0-1160.66.1.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64

I want to build a docker container by QEMU. I followed the instructions from the official QEMU github. But it gave errors.

$ uname -m
x86_64

$ docker run --rm -t arm64v8/ubuntu uname -m
WARNING: The requested image's platform (linux/arm64/v8) does not match the detected host platform (linux/amd64) and no specific platform was requested
exec /usr/bin/uname: exec format error

Then I found a similar docker problem on stackoverflow. I tried both docker build and docker buildx , and it still doesn't work.

$ docker build --platform linux/arm64/v8 .
unable to prepare context: unable to evaluate symlinks in Dockerfile path: lstat /work/home/chenning/Dockerfile: no such file or directory


$ docker buildx build --push --platform linux/amd64,linux/arm64 -t <tag> .
-bash: tag: No such file or directory

I also tried the following instruction, but it still reported errors.

$ docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
sh: write error: Invalid argument
Setting /usr/bin/qemu-alpha-static as binfmt interpreter for alpha
Setting /usr/bin/qemu-arm-static as binfmt interpreter for arm
sh: write error: Invalid argument
Setting /usr/bin/qemu-armeb-static as binfmt interpreter for armeb
sh: write error: Invalid argument
Setting /usr/bin/qemu-sparc-static as binfmt interpreter for sparc
sh: write error: Invalid argument
...

I followed the guide from this link

it works when I try

docker run --rm --privileged multiarch/qemu-user-static:register

I have qemu interpreters (including qemu-aarch64 ) in /proc/sys/fs/binfmt_misc

My qemu-aarch64 is like this

enabled
interpreter /usr/bin/qemu-aarch64-static
flags:
offset 0
magic 7f454c460201010000000000000000000200b700
mask ffffffffffffff00fffffffffffffffffeffffff

but I don't have the permission to change flags , I also don't have interpreter /usr/bin/qemu-aarch64-static .

Can I get some help, pls?

Answer 1

I got the same error, but executing this command fixed the issue:

$ docker run --rm --privileged multiarch/qemu-user-static --reset -p yes

So I can even spawn a shell:

$ docker run -it arm64v8/ubuntu /bin/bash
root@0b6162g03ka5:/# uname -m
aarch64

If it doesn't work take a look at this issue , otherwise you should create a new issue on github