diff --git a/sheets/jo b/sheets/jo
deleted file mode 100644
index cb907d5..0000000
--- a/sheets/jo
+++ /dev/null
@@ -1,11 +0,0 @@
-# jo
-# JSON output from a shell
-
-# Create an object
-jo -p name=jo n=17 parser=false
-
-# Create an array
-seq 1 10 | jo -a
-
-# Create a json with nested objects and arrays
-jo -p name=Jane point[]=1 point[]=2 geo[lat]=10 geo[lon]=20
diff --git a/sheets/pack b/sheets/pack
new file mode 100644
index 0000000..e186741
--- /dev/null
+++ b/sheets/pack
@@ -0,0 +1,26 @@
+# pack
+# CLI for building apps using Cloud Native Buildpacks
+
+# List recommended builders
+pack builder suggest
+
+# Use a builder to build an image 
+pack build <image-name> --builder <builder-to-use>
+
+# Example: Build a node app
+pack build testbuild --builder paketobuildpacks/builder:base
+# $ cat app.js 
+# var http = require('http');
+# http.createServer(function (request, response) {
+#    response.writeHead(200, {'Content-Type': 'text/plain'});
+#    response.end('Hello world!');
+# }).listen(8080);
+#
+# $ pack build testbuild --builder paketobuildpacks/builder:base
+# (..)
+# Successfully built image testbuild
+#
+# $ docker run --rm -p 8080:8080 testbuild
+#
+# $ curl http://127.0.0.1:8080
+# Hello world!