@@ -110,7 +110,7 @@ func (b *buildFile) CmdFrom(name string) error {

 		b.config = image.Config

 	}

 	if b.config.Env == nil || len(b.config.Env) == 0 {

-		b.config.Env = append(b.config.Env, "HOME=/", "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin")

+		b.config.Env = append(b.config.Env, "HOME=/", "PATH="+defaultPathEnv)

 	}

 	// Process ONBUILD triggers if they exist

 	if nTriggers := len(b.config.OnBuild); nTriggers != 0 {

@@ -23,6 +23,8 @@ import (

 	"time"

 )

+const defaultPathEnv = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

+

 var (

 	ErrNotATTY               = errors.New("The PTY is not a file")

 	ErrNoTTY                 = errors.New("No PTY found")

@@ -447,7 +449,7 @@ func (container *Container) Start() (err error) {

 	// Setup environment

 	env := []string{

 		"HOME=/",

-		"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",

+		"PATH=" + defaultPathEnv,

 		"HOSTNAME=" + container.Config.Hostname,

 	}

@@ -72,7 +72,7 @@ func (l *Link) ToEnv() []string {

 			if len(parts) != 2 {

 				continue

 			}

-			// Ignore a few variables that are added during docker build

+			// Ignore a few variables that are added during docker build (and not really relevant to linked containers)

 			if parts[0] == "HOME" || parts[0] == "PATH" {

 				continue

 			}