Run docker image for arm64 on amd64

2025-03-04 110 words One minute

Display the host architecture

uname -m
x86_64

Let’s try run image with arm64. We’ve got an error

        
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/v3) and no specific platform was requested 
exec /usr/bin/uname: exec format error

Install the qemu packages

sudo apt-get install qemu binfmt-support qemu-user-static

This step will execute the registering scripts

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

Check

        
        
        
    
cat /proc/sys/fs/binfmt_misc/qemu-aarch64
enabled
interpreter /usr/bin/qemu-aarch64-static
flags: F
offset 0
magic 7f454c460201010000000000000000000200b700
mask ffffffffffffff00fffffffffffffffffeffffff

ls /usr/bin/qemu-aarch64*
/usr/bin/qemu-aarch64_be-static  /usr/bin/qemu-aarch64-static

Testing the emulation environment

docker run --platform linux/arm64 --rm -t arm64v8/ubuntu uname -m
aarch64

Useful links: