a few more tweaks to the webtry setup doc

experimental/webtry/README.md

 WebTry Server
 =============
 
 Allows trying out Skia code in the browser. Run a local webserver
 and from the pages it serves try out Skia code and see the results
 immediately. To make sandboxing easier this must be built w/GPU off.
 
 
 Running Locally
 ===============
@@ skipping 34 matching lines @@
 
     gcutil --project=google.com:skia-buildbots ssh --ssh_user=default skia-webtry-b
 
 
 Do the first time
 =================
 
 The following things only need to be done once.
 
 1. SSH into the server as default.
-
-2. sudo apt-get install git schroot debootstrap
+2. sudo apt-get install git
+3. git clone https://skia.googlesource.com/skia
+4. cd ~/skia/experimental/webtry/setup
+5. ./webtry_setup.sh
 
 3. Add the following to the /etc/schroot/minimal/fstab:
 
   none /run/shm tmpfs rw,nosuid,nodev,noexec 0 0
   /home/webtry/inout             /skia_build/inout  none    rw,bind         0       0
   /home/webtry/cache             /skia_build/cache  none    rw,bind         0       0
 
 
 4. git clone https://skia.googlesource.com/skia
 
 5. cd ~/skia/experimental/webtry/setup
 
 6. ./webtry_setup.sh
 
 7. Change /etc/monit/monitrc to:
 
     set daemon 2
 
 then run the following so it applies:
 
     sudo /etc/init.d/monit restart
 
 This means that monit will poll every two seconds that our application is up and running.
 
 8. Set the TCP keepalive. For more info see:
    https://developers.google.com/cloud-sql/docs/gce-access
 
-    sudo bash -c 'echo 60 > /proc/sys/net/ipv4/tcp_keepalive_time'
+    sudo sh -c 'echo 60 > /proc/sys/net/ipv4/tcp_keepalive_time'
 
 To update the code
 ==================
 
 1. SSH into the server as default.
 2. cd ~/skia/experimental/webtry/setup
 3. git pull
 4. ./webtry_setup.sh
 
 Third Party Code
 ================
 
   * res/js/polyfill.js - Various JS polyfill libraries. To rebuild or update
     see poly/README.md.