Issue minishift#1748 Enable single alphanumeric character for profile…

… name

cmd/minishift/cmd/util/util.go

@@ -105,8 +105,8 @@ func IsValidProfile(profileName string) bool {
 	return false
 }
 
-// IsValidProfileName return true if profile name follow ^\w+[\w+-]+$
+// IsValidProfileName return true if profile name follow ^[a-zA-Z0-9]+[\w+-]*$
 func IsValidProfileName(profileName string) bool {
-	rr := regexp.MustCompile(`^\w+[\w+-]+$`)
+	rr := regexp.MustCompile(`^[a-zA-Z0-9]+[\w+-]*$`)
 	return rr.MatchString(profileName)
 }

cmd/minishift/cmd/util/util_test.go

@@ -32,6 +32,12 @@ func TestIsValidProfileName(t *testing.T) {
 		{"foo_123", true},
 		{"foo@123", false},
 		{"", false},
+		{"a", true},
+		{"a-", true},
+		{"a_", true},
+		{"1", true},
+		{"_", false},
+		{"-", false},
 		{"-foo", false},
 		{"--hell", false},
 		{"foo-123", true}}

docs/source/using/profiles.adoc

@@ -31,10 +31,8 @@ There are two ways to create a new profile.
 
 [NOTE]
 ====
-Profile name can only consist of alphanumeric characters and *-* as a separator, for example:
-
-- foo, bar123, demo-profile and 1stProfile are considered as valid profile names.
-- $foo, bar#@, profile@123 are invalid profile names.
+Profile name can only consist of alphanumeric characters.
+The use of underscore ( *_* ) and hyphen ( *-* ) are allowed as separator.
 ====
 
 === Using the `--profile` Flag