bare-pipe sockets lack TCP setKeepAlive; bare-http1 Agent calls it when
recycling connections and crashed peardock-server after Docker connected.
No-op keep-alive/unref on IPC sockets and safe-keepSocketAlive on Agent.
bare-http1 ignores socketPath and always dials TCP localhost:80, so
dockerode got HTTP 301→HTTPS and TLS errors. Patch the Bare http Agent
to connect via bare-net IPC when socketPath is set, matching Node.
Raven Scott