The act_runner job runs inside a Docker container. Docker Compose port
mappings bind to the Docker host, not the job container's localhost —
so localhost:5433 was always refused.
Fix: after compose starts, connect the job container (identified by
/etc/hostname) to the archive-net compose network. Then switch the
backend startup args to use service names db:5432 and minio:9000
instead of host-mapped ports.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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