#39 Added error handling on execution step

Author: dkapanidis

execute.go

@@ -19,8 +19,12 @@ func execute(name string, arg ...string) error {
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	cmd.Stdin = os.Stdin
+	res := cmd.Run()
 
-	return cmd.Run()
+	if res != nil {
+		os.Exit(ExecuteFailed)
+	}
+	return res
 }
 
 func oneliner(name string, arg ...string) (string, error) {

exitstatus.go

@@ -30,4 +30,7 @@ const (
 
 	// DeleteImageFailed represents failure during image deletion
 	DeleteImageFailed = 11
+
+	// ExecuteFailed represents an execution failure
+	ExecuteFailed = 12
 )