Some Raspberry PIs have an ARMv7 processor, and the docker image is not compatible with this architecture.
Logs during key generation on a Raspberry Pi 4 Model B Rev 1.5:
user@raspberrypi:~$ sudo docker run --rm ghcr.io/splrge/traefik node ace generate:key
Unable to find image 'ghcr.io/splrge/traefik:latest' locally
latest: Pulling from splrge/traefik
d25f557d7f31: Pull complete
9ad57c0a67fb: Pull complete
d8e86279494c: Pull complete
ee82c33b6351: Pull complete
240e9094a11c: Pull complete
a269d121716b: Pull complete
17a0828645f7: Pull complete
4f4fb700ef54: Pull complete
ef0c8896eb88: Pull complete
9bc8a5bf617b: Pull complete
3de3fab43684: Pull complete
Digest: sha256:f680ad2f31192aff988df1f40202b73db43a5e97b82c1aa70f6bae8dce6fba88
Status: Downloaded newer image for ghcr.io/splrge/traefik:latest
WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm/v7) and no specific platform was requested
exec /usr/local/bin/docker-entrypoint.sh: exec format error
Some Raspberry PIs have an ARMv7 processor, and the docker image is not compatible with this architecture. Logs during key generation on a Raspberry Pi 4 Model B Rev 1.5: