Merge pull request #338 from dagger/pushcontainer-image-ref

Pushcontainer image ref

dagger/pipeline.go

@@ -627,7 +627,7 @@ func (p *Pipeline) PushContainer(ctx context.Context, op *compiler.Value, st llb
 	// Add the default tag "latest" to a reference if it only has a repo name.
 	ref = reference.TagNameOnly(ref)
 
-	_, err = p.s.Export(ctx, p.State(), &p.image, bk.ExportEntry{
+	resp, err := p.s.Export(ctx, p.State(), &p.image, bk.ExportEntry{
 		Type: bk.ExporterImage,
 		Attrs: map[string]string{
 			"name": ref.String(),
@@ -635,6 +635,29 @@ func (p *Pipeline) PushContainer(ctx context.Context, op *compiler.Value, st llb
 		},
 	})
 
+	if err != nil {
+		return st, err
+	}
+
+	if digest, ok := resp.ExporterResponse["containerimage.digest"]; ok {
+		imageRef := fmt.Sprintf(
+			"%s@%s",
+			resp.ExporterResponse["image.name"],
+			digest,
+		)
+
+		return st.File(
+			llb.Mkdir("/dagger", fs.FileMode(0755)),
+			llb.WithCustomName(p.vertexNamef("Mkdir /dagger")),
+		).File(
+			llb.Mkfile("/dagger/image_digest", fs.FileMode(0644), []byte(digest)),
+			llb.WithCustomName(p.vertexNamef("Storing image digest to /dagger/image_digest")),
+		).File(
+			llb.Mkfile("/dagger/image_ref", fs.FileMode(0644), []byte(imageRef)),
+			llb.WithCustomName(p.vertexNamef("Storing image ref to /dagger/image_ref")),
+		), nil
+	}
+
 	return st, err
 }
 

examples/jamstack/ecr_image.cue

@@ -25,7 +25,10 @@ import (
 		target: pushTarget
 	}
 
-	push: #up: [
+	ref: {
+		string
+
+		#up: [
 			// Build the docker image
 			op.#DockerBuild & {
 				context: source
@@ -38,8 +41,10 @@ import (
 			op.#PushContainer & {
 				ref: pushTarget
 			},
+			op.#Export & {
+				source: "/dagger/image_ref"
+				format: "string"
+			},
 		]
-
+	}
-	// FIXME: ref does not include the sha256: https://github.com/dagger/dagger/issues/303
-	ref: pushTarget
 }