Fix problems and adding functionnalities

Many fixes and enhancements:

- Add icon option
- Add env file managment
- Ordering compose parsing options
- Fix path with underscores
- Fix image and tag discovery
- Better documentation for labels

generator/rbac.go

@@ -102,38 +102,38 @@ type RoleBinding struct {
 	service *types.ServiceConfig
 }
 
-func (r *RoleBinding) Yaml() ([]byte, error) {
-	return yaml.Marshal(r)
-}
-
 func (r *RoleBinding) Filename() string {
 	return r.service.Name + ".rolebinding.yaml"
 }
 
+func (r *RoleBinding) Yaml() ([]byte, error) {
+	return yaml.Marshal(r)
+}
+
 // Role is a kubernetes Role.
 type Role struct {
 	*rbacv1.Role
 	service *types.ServiceConfig
 }
 
-func (r *Role) Yaml() ([]byte, error) {
-	return yaml.Marshal(r)
-}
-
 func (r *Role) Filename() string {
 	return r.service.Name + ".role.yaml"
 }
 
+func (r *Role) Yaml() ([]byte, error) {
+	return yaml.Marshal(r)
+}
+
 // ServiceAccount is a kubernetes ServiceAccount.
 type ServiceAccount struct {
 	*corev1.ServiceAccount
 	service *types.ServiceConfig
 }
 
-func (r *ServiceAccount) Yaml() ([]byte, error) {
-	return yaml.Marshal(r)
-}
-
 func (r *ServiceAccount) Filename() string {
 	return r.service.Name + ".serviceaccount.yaml"
 }
+
+func (r *ServiceAccount) Yaml() ([]byte, error) {
+	return yaml.Marshal(r)
+}