Use docker images for the current architecture (vs just for amd64)

Fix #828, #835

cmd/control/install.go

@@ -63,7 +63,7 @@ func installAction(c *cli.Context) {
 		log.WithFields(log.Fields{"err": err}).Fatal("ros install: failed to load config")
 	}
 	if image == "" {
-		image = cfg.Rancher.Upgrade.Image + ":" + config.VERSION
+		image = cfg.Rancher.Upgrade.Image + ":" + config.VERSION + config.SUFFIX
 	}
 
 	installType := c.String("install-type")

cmd/control/selinux.go

@@ -49,7 +49,7 @@ func selinuxCommand() cli.Command {
 			"-v", "/etc/selinux:/etc/selinux",
 			"-v", "/var/lib/selinux:/var/lib/selinux",
 			"-v", "/usr/share/selinux:/usr/share/selinux",
-			fmt.Sprintf("rancher/os-selinuxtools:%s", config.VERSION), "bash"}
+			fmt.Sprintf("rancher/os-selinuxtools:%s", config.VERSION + config.SUFFIX), "bash"}
 		syscall.Exec("/bin/system-docker", argv, []string{})
 	}
 

config/types.go

@@ -4,6 +4,7 @@ import (
 	"github.com/coreos/coreos-cloudinit/config"
 	"github.com/docker/libcompose/project"
 	"github.com/rancher/netconf"
+	"runtime"
 )
 
 const (
@@ -44,12 +45,20 @@ const (
 var (
 	OemConfigFile = OEM + "/oem-config.yml"
 	VERSION       string
+	ARCH          string
+	SUFFIX        string
 )
 
 func init() {
 	if VERSION == "" {
 		VERSION = "v0.0.0-dev"
 	}
+	if ARCH == "" {
+		ARCH = runtime.GOARCH
+	}
+	if SUFFIX == "" && ARCH != "amd64" {
+		SUFFIX = "_" + ARCH
+	}
 }
 
 type Repository struct {