How to Install Sandstorm on Ubuntu 16.04

Once it is downloaded, execute the script to install Sandstorm as follows.

root@linuxhelp11:~# bash install.sh

Sandstorm makes it easy to run web apps on your own server. You can have:

1. A typical install, to use Sandstorm (press enter to accept this default)
2. A development server, for working on Sandstorm itself or localhost-based app development

How are you going to use this Sandstorm install? [1] 
We' re going to:

* Install Sandstorm in /opt/sandstorm
* Automatically keep Sandstorm up-to-date
* Configure auto-renewing HTTPS if you use a subdomain of sandcats.io
* Create a service user (sandstorm) that owns Sandstorm' s files
* Configure Sandstorm to start on system boot (with systemd)
* Listen for inbound email on port 25.

Rest assured that Sandstorm itself won' t run as root.
OK to continue? [yes] 
Note: Sandstorm' s storage will only be accessible to the group ' sandstorm' .
As a Sandstorm user, you are invited to use a free Internet hostname as a subdomain of sandcats.io,
a service operated by the Sandstorm development team.
...
Sandcats.io protects your privacy and is subject to terms of use. By using it,
you agree to the terms of service &  privacy policy available here:
https://sandcats.io/terms https://sandcats.io/privacy

Choose your desired Sandcats subdomain (alphanumeric, max 20 characters).
Type the word none to skip this step, or help for help.
What *.sandcats.io subdomain would you like? [] none
URL users will enter in browser: [http://linuxhelp11.com:6080] 
Sandstorm requires you to set up a wildcard DNS entry pointing at the server. 
This allows Sandstorm to allocate new hosts on-the-fly for sandboxing purposes.
Please enter a DNS hostname containing a ' *'  which maps to your server. For 
example, if you have mapped *.foo.example.com to your server, you could enter
" *.foo.example.com" . You can also specify that hosts should have a special
prefix, like " ss-*.foo.example.com" . Note that if your server' s main page
is served over SSL, the wildcard address must support SSL as well, which
implies that you must have a wildcard certificate. For local-machine servers,
we have mapped *.local.sandstorm.io to 127.0.0.1 for your convenience, so you
can use " *.local.sandstorm.io"  here. If you are serving off a non-standard
port, you must include it here as well.
Wildcard host: [*.linuxhelp11.com:6080] 

Config written to /opt/sandstorm/sandstorm.conf.
Finding latest build for dev channel...
Downloading: https://dl.sandstorm.io/sandstorm-221.tar.xz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 32.0M  100 32.0M    0     0   668k      0  0:00:49  0:00:49 --:--:--  957k
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   310  100   310    0     0    250      0  0:00:01  0:00:01 --:--:--   250
GPG signature is valid.

Created symlink from /etc/systemd/system/multi-user.target.wants/sandstorm.service to /etc/systemd/system/sandstorm.service.
Your server is coming online. Waiting up to 90 seconds...

Your server is now online! Visit this link to start using it:

  http://linuxhelp11.com:6080/setup/token/69a4a2a8662ab4698bc89a958a67974bbabdc8eb

NOTE: This URL expires in 15 minutes. You can generate a new setup URL by running
' sudo sandstorm admin-token'  from the command line.

To learn how to control the server, run:
  sandstorm help

The installation is now complete. Copy the Highlighted URL and open your browser and paste it into the URL field. The Welcome page of Sandstorm will appear now. Click Begin Sandstorm Setup.