docker-slim doesn't work on macos aarch64 (arm on m1) with an aarch64 docker image

Expected Behavior

Run docker-slim against an aarch64 docker image, it runs.

Actual Behavior

Fails to run... log message:

cmd=build info=event.error status='received' data='SensorError{Op:sensor.fanotify.Run/fanapi.Initialize,Kind:call.error,Wrapped:{Type=syscall.Errno,Info=function not implemented,Line:43,File:github.com/docker-slim/docker-slim/pkg/app/sensor/monitors/fanotify/monitor.go}}'

The issue I think is that there is no arm build of docker-slim-sensor?

Steps to Reproduce the Problem

1. install using brew (or zip)
2. run docker-slim on an aarch64 image

Specifications

• Version: latest
• Platform: macos aarch64

Fix (build it yourself)

• git clone git clone git@github.com:docker-slim/docker-slim.git
• cd docker-slim
• GOOS=linux go build -o /usr/local/bin/docker-slim-sensor cmd/docker-slim-sensor/main.go

Start with cmd/docker-slim-sensor/main.go and pkg/app/sensor/monitors/fanotify/monitor.go, then reproduce the failure on macOS aarch64 with an aarch64 image. Compare this with building the sensor using GOOS=linux go build and determine the required architecture-specific build or behavior. Done means docker-slim runs successfully against the reported image without the fanotify initialization error.