meda
7c97a428ae
Second failure mode: act_runner executes job steps in executor containers running with network=host (despite container.network config — that only applies to job containers). The buildx CLI therefore resolves tcp://buildkitd:8375 in the HOST namespace, where docker DNS names do not resolve. Fix: publish buildkitd's TCP port to host loopback (-p 127.0.0.1:8375:8375) and use tcp://127.0.0.1:8375 as the endpoint. Works from both host-network executors and job containers; port is not exposed on any external interface. Validated on oracle: buildx remote Status running, platforms linux/arm64,v7,v6.