ERROR: no matching manifest for linux/arm/v8 in the manifest list entries

[robotrapta]

This issue can come up when running docker-compose up and it tries to pull docker.io/groundlight/monitoring-notification-server-backend:latest from dockerhub.

[robotrapta]

linux/arm/v8 is not a supported tag at https://hub.docker.com/r/groundlight/monitoring-notification-server-backend/tags.

We should probably add it as a supported tag, but AFAICT it's only requested in somewhat strange situations. Specifically we've seen this on a machine with 64-bit hardware, and a 64-bit kernel (as shown by uname -m returning aarch64, but 32-bit userland processes. e.g. file /usr/bin/docker returning ELF 32-bit. This indicates the OS is a bit of a strange 32-bit/64-bit hybrid.

ARM chips which support the v8 instruction set are necessarily 64-bit capable. By asking for arm/v8 it seems to be asking for a 32-bit version of the image, but using the v8 instruction set which generally runs at 64 bit.

For these reasons, we currently advise fixing the OS / docker installation to use linux/arm64 images. But we'll leave this open until we properly support this scenario, because it's not crazy to think somebody would have good reason to want arm/v8.