image/ostree-raw: pass directories and files customization to pipeline

Extend the `OSTreeRawImage` with a slice of custom directories and
files, that can be created in the image. Pass these down to the ostree
deployment pipeline, so that it can add necessary osbuld stages if any
directories or files were specified by user.

Signed-off-by: Tomáš Hozza <thozza@redhat.com>

internal/image/ostree_raw.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/osbuild/osbuild-composer/internal/artifact"
 	"github.com/osbuild/osbuild-composer/internal/disk"
+	"github.com/osbuild/osbuild-composer/internal/fsnode"
 	"github.com/osbuild/osbuild-composer/internal/manifest"
 	"github.com/osbuild/osbuild-composer/internal/ostree"
 	"github.com/osbuild/osbuild-composer/internal/platform"
@@ -38,6 +39,9 @@ type OSTreeRawImage struct {
 	Filename string
 
 	Ignition bool
+
+	Directories []*fsnode.Directory
+	Files       []*fsnode.File
 }
 
 func NewOSTreeRawImage(commit ostree.CommitSpec) *OSTreeRawImage {
@@ -57,6 +61,8 @@ func ostreeCompressedImagePipelines(img *OSTreeRawImage, m *manifest.Manifest, b
 	osPipeline.Users = img.Users
 	osPipeline.Groups = img.Groups
 	osPipeline.SysrootReadOnly = img.SysrootReadOnly
+	osPipeline.Directories = img.Directories
+	osPipeline.Files = img.Files
 
 	imagePipeline := manifest.NewRawOStreeImage(m, buildPipeline, img.Platform, osPipeline)