Change perms for vpn-init. Update README.

README.md

@@ -1,12 +1,35 @@
 # Running supervisor in the dev env
 
+## Deploy your local version to the devenv registry
+If you haven't done so yet, login to the devenv registry:
+`docker login registry.resindev.io`
+Use username "resin" and the registry's [default login details](https://bitbucket.org/rulemotion/resin-builder/src/4594c0020dcae2c98e4b3d7bab718b088bb7e52a/config/confd/templates/env.tmpl?at=master#cl-9) if you haven't changed them.
+`make ARCH=i386 deploy`
+This will build the image if you haven't done it yet.
+A different registry can be specified with the DEPLOY_REGISTRY env var.
+
 ## Set up config
 Edit `tools/dind/config.json` to contain the values for a staging config.json.
+Example (replace the first four values from a staging config for your own app):
+```
+{
+    "applicationId": "1939",
+    "apiKey": "saf987fasXKPz82anHASGAlovP",
+    "userId": "141",
+    "username": "gh_pcarranzav",
+    "deviceType": "raspberry-pi2",
+    "files": {
+        "network/settings": "[global]\nOfflineMode=false\n\n[WiFi]\nEnable=true\nTethering=false\n\n[Wired]\nEnable=true\nTethering=false\n\n[Bluetooth]\nEnable=true\nTethering=false",
+        "network/network.config": "[service_home_ethernet]\nType = ethernet\nNameservers = 8.8.8.8,8.8.4.4"
+    }
+}
+```
 
 ## Start the supervisor instance
 ```
 make ARCH=i386 run-supervisor
 ```
+This will setup a docker-in-docker instance with an image that runs the supervisor image from the devenv registry (registry.resindev.io). A different registry can be specified with the DEPLOY_REGISTRY env var.
 
 ## View the containers logs
 ```
@@ -18,3 +41,7 @@ logs supervisor -f
 enter supervisor
 tail /var/log/supervisor-log/resin_supervisor_stdout.log -f
 ```
+
+## Stop the supervisor
+`make stop-supervisor`
+This will unmount /var/lib/docker in the container and then stop it. This prevents future failures due to no loopback devices being available.