fix: use cache-from and pass in layer-build, layer-final

Author: asalkeld

pkg/provider/pulumi/common/image.go

@@ -58,9 +58,13 @@ func NewImage(ctx *pulumi.Context, name string, args *ImageArgs, opts ...pulumi.
 	imageArgs := &docker.ImageArgs{
 		ImageName: args.RepositoryUrl,
 		Build: docker.DockerBuildArgs{
-			CacheFrom: docker.CacheFromPtr(&docker.CacheFromArgs{}),
-			Context:   pulumi.String(args.ProjectDir),
-			Args:      pulumi.StringMap{"PROVIDER": pulumi.String(args.Provider)},
+			CacheFrom: docker.CacheFromPtr(&docker.CacheFromArgs{
+				Stages: pulumi.StringArray{
+					pulumi.String("layer-build"),
+					pulumi.String("layer-final"),
+				}}),
+			Context: pulumi.String(args.ProjectDir),
+			Args:    pulumi.StringMap{"PROVIDER": pulumi.String(args.Provider)},
 			Env: pulumi.StringMap{
 				"DOCKER_BUILDKIT": pulumi.String("1"),
 			},