added support for multiple-compose files

pkg/loader/bundle/bundle.go

@@ -173,12 +173,12 @@ func loadPorts(service Service) ([]kobject.Ports, string) {
 }
 
 // load dab file into KomposeObject
-func (b *Bundle) LoadFile(file string) kobject.KomposeObject {
+func (b *Bundle) LoadFile(files []string) kobject.KomposeObject {
 	komposeObject := kobject.KomposeObject{
 		ServiceConfigs: make(map[string]kobject.ServiceConfig),
 		LoadedFrom:     "bundle",
 	}
-
+	file := files[0]
 	buf, err := ioutil.ReadFile(file)
 	if err != nil {
 		logrus.Fatalf("Failed to read bundles file: %s ", err)

pkg/loader/compose/compose.go

@@ -221,16 +221,16 @@ func loadPorts(composePorts []string) ([]kobject.Ports, error) {
 }
 
 // load compose file into KomposeObject
-func (c *Compose) LoadFile(file string) kobject.KomposeObject {
+func (c *Compose) LoadFile(files []string) kobject.KomposeObject {
 	komposeObject := kobject.KomposeObject{
 		ServiceConfigs: make(map[string]kobject.ServiceConfig),
 		LoadedFrom:     "compose",
 	}
 	context := &project.Context{}
-	if file == "" {
-		file = "docker-compose.yml"
+	if len(files) == 0 {
+		files = append(files, "docker-compose.yml")
 	}
-	context.ComposeFiles = []string{file}
+	context.ComposeFiles = files
 
 	if context.ResourceLookup == nil {
 		context.ResourceLookup = &lookup.FileResourceLookup{}

pkg/loader/loader.go

@@ -26,7 +26,7 @@ import (
 )
 
 type Loader interface {
-	LoadFile(file string) kobject.KomposeObject
+	LoadFile(files []string) kobject.KomposeObject
 	///Name() string
 }