default stack.toml to use first run image

Signed-off-by: Joe Kutner <jpkutner@gmail.com>
buildpacks · Apr 12, 2023 · 1b52878 · 1b52878
1 parent fe1db21
commit 1b52878
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Showing 2 changed files with 8 additions and 3 deletions.
diff --git a/internal/builder/builder.go b/internal/builder/builder.go
@@ -932,7 +932,12 @@ func orderFileContents(order dist.Order, orderExt dist.Order) (string, error) {
 
 func (b *Builder) stackLayer(dest string) (string, error) {
 	buf := &bytes.Buffer{}
-	err := toml.NewEncoder(buf).Encode(b.metadata.Stack)
+	var err error
+	if b.metadata.Stack.RunImage.Image != "" {
+		err = toml.NewEncoder(buf).Encode(b.metadata.Stack)
+	} else if len(b.metadata.RunImages) > 0 {
+		err = toml.NewEncoder(buf).Encode(b.metadata.RunImages[0])
+	}
 	if err != nil {
 		return "", errors.Wrapf(err, "failed to marshal stack.toml")
 	}

diff --git a/internal/builder/writer/human_readable.go b/internal/builder/writer/human_readable.go
@@ -46,8 +46,8 @@ Created By:
 {{ end -}}
 
 Trusted: {{.Trusted}}
-{{ if ne .Info.Stack "" -}}
-Stack:
+
+{{ if ne .Info.Stack "" -}}Stack:
   ID: {{ .Info.Stack }}{{ end -}}
 {{- if .Verbose}}
 {{- if ne (len .Info.Mixins) 0 }}