allow file content to be passed a custom config

pkg/content/file/file.go

@@ -87,7 +87,11 @@ func (f *file) compute() error {
 		return err
 	}
 
-	cfg := f.client.Config(f.ref)
+	cfg := f.config
+	if cfg == nil {
+		cfg = f.client.Config(f.ref)
+	}
+
 	cfgDesc, err := partial.Descriptor(cfg)
 	if err != nil {
 		return err

pkg/content/file/options.go

@@ -1,6 +1,9 @@
 package file
 
-import "github.com/rancherfederal/hauler/internal/getter"
+import (
+	"github.com/rancherfederal/hauler/internal/getter"
+	"github.com/rancherfederal/hauler/pkg/artifact"
+)
 
 type Option func(*file)
 
@@ -9,3 +12,15 @@ func WithClient(c *getter.Client) Option {
 		f.client = c
 	}
 }
+
+func WithConfig(obj interface{}, mediaType string) Option {
+	return func(f *file) {
+		f.config = artifact.ToConfig(obj, artifact.WithConfigMediaType(mediaType))
+	}
+}
+
+func WithAnnotations(m map[string]string) Option {
+	return func(f *file) {
+		f.annotations = m
+	}
+}