Build legacy containerd-shim for upgrades

scripts/build

@@ -87,6 +87,11 @@ CGO_ENABLED=1 go build -tags "$TAGS" -ldflags "$VERSIONFLAGS $LDFLAGS $STATIC_SQ
 echo Building runc
 make EXTRA_LDFLAGS="-w -s" BUILDTAGS="apparmor seccomp" -C ./vendor/github.com/opencontainers/runc static
 cp -f ./vendor/github.com/opencontainers/runc/runc ./bin/runc
+
+echo Building containerd-shim
+make -C ./vendor/github.com/containerd/containerd bin/containerd-shim
+cp -f ./vendor/github.com/containerd/containerd/bin/containerd-shim ./bin/containerd-shim
+
 echo Building containerd-shim-runc-v1
 make -C ./vendor/github.com/containerd/containerd bin/containerd-shim-runc-v1
 cp -f ./vendor/github.com/containerd/containerd/bin/containerd-shim-runc-v1 ./bin/containerd-shim-runc-v1

vendor.go

@@ -3,6 +3,7 @@
 package main
 
 import (
+	_ "github.com/containerd/containerd/cmd/containerd-shim"
 	_ "github.com/containerd/containerd/cmd/containerd-shim-runc-v1"
 	_ "github.com/coreos/go-systemd/activation"
 	_ "github.com/go-bindata/go-bindata"