This is happening now due to improvements in net/http: https://github.com/golang/go/commit/99fb19194c03c618c0d8faa87b91ba419ae28ee3 To test, change the go version in the Dockerfile: -ENV GO_VERSION 1.5.3 +ENV GO_VERSION 1.6beta2 More info here: https://github.com/golang/go/issues/14001 Signed-off-by: Christy Perez <christy@linux.vnet.ibm.com> Upstream-commit: 2df5dafdaf12296fa2bd92ced62ba80da41af744 Component: engine