feat(user-data): adds nsenter alias

Adds an 'nse' shell script as a convenience to entering containers.

closes #916

Author: carmstrong

contrib/coreos/user-data

@@ -77,6 +77,24 @@ coreos:
       Type=oneshot
       ExecStartPre=/usr/bin/rm /etc/motd
       ExecStart=/usr/bin/ln -s /run/deis/motd /etc/motd
+  - name: link-deis-bashrc.service
+    command: start
+    content: |
+      [Unit]
+      Description=remove .bashrc file for CoreOS user
+      ConditionFileNotEmpty=/run/deis/.bashrc
+
+      [Service]
+      Type=oneshot
+      ExecStartPre=/usr/bin/rm /home/core/.bashrc
+      ExecStart=/usr/bin/ln -s /run/deis/.bashrc /home/core/.bashrc
 write_files:
   - path: /run/deis/motd
     content: " \e[31m* *    \e[34m*   \e[32m*****    \e[39mddddd   eeeeeee iiiiiii   ssss\n\e[31m*   *  \e[34m* *  \e[32m*   *     \e[39md   d   e    e    i     s    s\n \e[31m* *  \e[34m***** \e[32m*****     \e[39md    d  e         i    s\n\e[32m*****  \e[31m* *    \e[34m*       \e[39md     d e         i     s\n\e[32m*   * \e[31m*   *  \e[34m* *      \e[39md     d eee       i      sss\n\e[32m*****  \e[31m* *  \e[34m*****     \e[39md     d e         i         s\n  \e[34m*   \e[32m*****  \e[31m* *      \e[39md    d  e         i          s\n \e[34m* *  \e[32m*   * \e[31m*   *     \e[39md   d   e    e    i    s    s\n\e[34m***** \e[32m*****  \e[31m* *     \e[39mddddd   eeeeeee iiiiiii  ssss\n\n\e[39mWelcome to Deis\t\t\tPowered by Core\e[38;5;45mO\e[38;5;206mS\e[39m\n"
+  - path: /run/deis/.bashrc
+    owner: core
+    content: |
+      source /usr/share/skel/.bashrc
+      function nse() {
+        sudo nsenter --pid --uts --mount --ipc --net --target $(docker inspect --format="{{ .State.Pid }}" $1)
+      }