Docker Agent fails to run on ARM64/Aarch64

[eljese]

Describe the bug
Agent fails to run on ARM64

To Reproduce
Run agent install on ARM64.
Fails with EXEC error

Expected behavior
Identify correct version and pull ARM64 binary

Environment:

• Pulse Version: [4.22.0-rc.3]
• Installation Type: Agent installation at Oracle Ampere One with ubuntu 22.04

[bateschris]

Can confirm at version 4.23.
systemd[1]: Started pulse-docker-agent.service - Pulse Docker Agent.
(er-agent)[1534106]: pulse-docker-agent.service: Failed to execute /usr/local/bin/pulse-docker-agent: Exec format error
(er-agent)[1534106]: pulse-docker-agent.service: Failed at step EXEC spawning /usr/local/bin/pulse-docker-agent: Exec format error
systemd[1]: pulse-docker-agent.service: Main process exited, code=exited, status=203/EXEC
systemd[1]: pulse-docker-agent.service: Failed with result 'exit-code'.

[rcourtman]

Pushed an update to the Docker agent self-update path so it prefers the arch-specific binary (commit c15a87b). This restores the ARM64 upgrade flow; release packaging still pending.