python:3.12-arm64 failing

[youg9203]

Due to new change python3.12 is failing on x86_64:

Status: Downloaded newer image for public.ecr.aws/lambda/python:3.12-arm64
exec /bin/sh: exec format error

Steps:

$ docker run --privileged --rm tonistiigi/binfmt --install arm64
$ docker run --rm --platform linux/arm64 \
    --entrypoint /bin/sh \
    amazon/aws-lambda-python:3.12-arm64 \
    -c "python -c 'print(\"Hello ARM64\")'"

[darklight3it]

Hello @youg9203!

Tried running your script in AL2 x86 and it is working.

$ docker --version
Docker version 25.0.8, build 0bab007
$ uname -m                                                                                                                                                                                                                                                                                                        
x86_64
$ docker run --privileged --rm tonistiigi/binfmt --install arm64
$ docker run --rm --platform linux/arm64 \
    --entrypoint /bin/sh \
    amazon/aws-lambda-python:3.12-arm64 \
    -c "python -c 'print(\"Hello ARM64\")'"

Digest: sha256:d64cd1a0b83d0ec4ca37c7492120100b8fcd7bf4be9c96c04bed95243d123c9d
Status: Downloaded newer image for amazon/aws-lambda-python:3.12-arm64
Hello ARM64

As a general rule we don't guarantee our images to run in docker targeting a different host OS architectures via an emulator. My suggestion would be to check how the version you are using of tonistiigi/binfmt.

If you are running on alpine I saw a similar compatibility problem here (tonistiigi/binfmt#201). Hope this helps.