The router's handleDownloadAgent searches for /opt/pulse/bin/pulse-docker-agent
as a fallback when arch-specific binaries are not found or requested. In v4.23.0,
this fallback binary was missing from the Docker image, causing 404 errors for
linux-amd64 downloads.
The Dockerfile now explicitly copies the fallback binary to /opt/pulse/bin/pulse-docker-agent
alongside the arch-specific binaries (linux-amd64, linux-arm64, linux-armv7).
Verified with local build - all four binaries now exist in /opt/pulse/bin/.
Addresses #528
When Pulse runs in Docker, ARM users couldn't download the docker-agent
because only the host architecture binary was built. The Dockerfile now
builds amd64, arm64, and armv7 binaries and includes them at /opt/pulse/bin/
so the download endpoint can serve all architectures.
