feat: Support ARM

[Israphel]

Feature Request

Describe the Feature Request
We want to only build ARM containers on GHA, but the inline scanner only supports x86.

Is your feature request related to a problem? Please describe
Can't scan the container without building x86 too.

Describe Preferred Solution
Provide a multi-arch container so the inline scanner works for every case.

Additional Context

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 /docker-entrypoint.sh: exec format error

[avadhanij]

Running into the same issue.

[velkovb]

Same issue here.