No arm support for relay image

[jellevanhees]

Self-Hosted Version

22.7.0

CPU Architecture

arm64

Docker Version

20.10.17

Docker Compose Version

2.6.0

Steps to Reproduce

running install.sh erros out with the following error.

▶ Ensuring Relay credentials ...
../relay/config.yml already exists, skipped creation.
relay Pulling 
relay Pulled 
Network sentry-self-hosted_default  Creating
Network sentry-self-hosted_default  Created
exec /bin/bash: exec format error
An error occurred, caught SIGERR on line 29
Cleaning up...

running docker compose run --rm --no-deps -T relay credentials results in

exec /bin/bash: exec format error 

running docker run -it --rm getsentry/relay bash results in

WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
exec /bin/bash: exec format error

Expected Result

getsentry/replay and other sentry images are built with arm support.

Actual Result

WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
exec /bin/bash: exec format error

[emmatyping]

I think we'd rather have a single issue for self-hosted tracking this: #1585