pkgs: Update packages to the latest linuxkit/alpine

Signed-off-by: Avi Deitcher <avi@deitcher.net>

pkg/init/Dockerfile

@@ -1,11 +1,11 @@
-FROM linuxkit/alpine:e2391e0b164c57db9f6c4ae110ee84f766edc430 AS build
+FROM linuxkit/alpine:0c069d0fd7defddb6e03925fcd4915407db0c9e1 AS build
 RUN apk add --no-cache --initdb alpine-baselayout make gcc musl-dev git linux-headers
 
 ADD usermode-helper.c ./
 RUN LDFLAGS=-static CFLAGS=-Werror make usermode-helper
 
 RUN apk add --no-cache go musl-dev
-ENV GOPATH=/go PATH=$PATH:/go/bin
+ENV GOPATH=/go PATH=$PATH:/go/bin GO111MODULE=off
 # Hack to work around an issue with go on arm64 requiring gcc
 RUN [ $(uname -m) = aarch64 ] && apk add --no-cache gcc || true
 
@@ -18,7 +18,7 @@ RUN mkdir /tmp/bin && cd /tmp/bin/ && cp /go/bin/rc.init . && ln -s rc.init rc.s
 RUN cd /go/src/cmd/service && ./skanky-vendor.sh $GOPATH/src/github.com/containerd/containerd
 RUN go-compile.sh /go/src/cmd/service
 
-FROM linuxkit/alpine:e2391e0b164c57db9f6c4ae110ee84f766edc430 AS mirror
+FROM linuxkit/alpine:0c069d0fd7defddb6e03925fcd4915407db0c9e1 AS mirror
 RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
 RUN apk add --no-cache --initdb -p /out alpine-baselayout busybox musl
 

pkg/init/cmd/service/runc.go

@@ -9,8 +9,8 @@ import (
 	"path/filepath"
 	"strconv"
 
-	"github.com/opencontainers/runc/libcontainer/system"
 	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
 )
 
 const (
@@ -49,7 +49,7 @@ func runcInit(rootPath, serviceType string) int {
 	}
 
 	// need to set ourselves as a child subreaper or we cannot wait for runc as reparents to init
-	if err := system.SetSubreaper(1); err != nil {
+	if err := setSubreaper(1); err != nil {
 		log.Fatalf("Cannot set as subreaper: %v", err)
 	}
 
@@ -164,3 +164,9 @@ func runcInit(rootPath, serviceType string) int {
 
 	return status
 }
+
+// setSubreaper copied directly from https://github.com/opencontainers/runc/blob/b23315bdd99c388f5d0dd3616188729c5a97484a/libcontainer/system/linux.go#L88
+// to avoid version and vendor conflict issues
+func setSubreaper(i int) error {
+	return unix.Prctl(unix.PR_SET_CHILD_SUBREAPER, uintptr(i), 0, 0, 0)
+}