diff --git a/docs/content/examples/image/image.nix b/docs/content/examples/image/image.nix
index 74938da..dfd2ff1 100644
--- a/docs/content/examples/image/image.nix
+++ b/docs/content/examples/image/image.nix
@@ -1,5 +1,5 @@
 { dockerTools, nginx }:
-dockerTools.buildLayeredImage {
+dockerTools.streamLayeredImage {
   name = "nginx";
   contents = [ nginx ];
   extraCommands = ''
diff --git a/lib/docker/default.nix b/lib/docker/default.nix
index 5bb67b0..2193c96 100644
--- a/lib/docker/default.nix
+++ b/lib/docker/default.nix
@@ -2,13 +2,18 @@
 with lib; {
   copyDockerImages = { images, dest, args ? "" }:
     pkgs.writeScript "copy-docker-images.sh" (concatMapStrings
-      (image: ''
-        #!${pkgs.runtimeShell}
+      (image:
+        let
+          prefix = optionalString (image.isExe or false) "${image} | ${pkgs.gzip}/bin/gzip --fast |";
+          src = if image.isExe or false then "/dev/stdin" else ${image};
+        in
+        ''
+          #!${pkgs.runtimeShell}
 
-        set -e
+          set -e
 
-        echo "copying '${image.imageName}:${image.imageTag}' to '${dest}/${image.imageName}:${image.imageTag}'"
-        ${pkgs.skopeo}/bin/skopeo copy ${args} $@ docker-archive:${image} ${dest}/${image.imageName}:${image.imageTag}
-      '')
+          echo "copying '${image.imageName}:${image.imageTag}' to '${dest}/${image.imageName}:${image.imageTag}'"
+          ${prefix} ${pkgs.skopeo}/bin/skopeo copy ${args} $@ docker-archive:${src} ${dest}/${image.imageName}:${image.imageTag}
+        '')
       images);
 }