standardized app installation commands

* Standardized all install commands to use sudo & -y to avoid new user confusion.
* Added required missing installation (apache2 missing in Web Server and gunicorn section)
* Consolidated installs for a section to follow same format (Web Server and gunicorn section nginx)
* Added missing install argument when installing the arbitrary precision calculator language.

docs/getting-started.md

@@ -15,7 +15,7 @@ The following packages are needed to install PostgreSQL:
 * python-psycopg2
 
 ```
-# apt-get install postgresql libpq-dev python-psycopg2
+# sudo apt-get install -y postgresql libpq-dev python-psycopg2
 ```
 
 ## Configuration
@@ -61,7 +61,7 @@ NetBox requires following dependencies:
 * graphviz
 
 ```
-# apt-get install python2.7 python-dev git python-pip libxml2-dev libxslt1-dev libffi-dev graphviz
+# sudo apt-get install -y python2.7 python-dev git python-pip libxml2-dev libxslt1-dev libffi-dev graphviz
 ```
 
 You may opt to install NetBox either from a numbered release or by cloning the master branch of its repository on GitHub.
@@ -90,7 +90,7 @@ Create the base directory for the NetBox installation. For this guide, we'll use
 If `git` is not already installed, install it:
 
 ```
-# sudo apt-get install git
+# sudo apt-get install -y git
 ```
 
 Next, clone the **master** branch of the NetBox GitHub repository into the current directory:
@@ -111,7 +111,7 @@ Checking connectivity... done.
 Install the necessary Python packages using pip. (If you encounter any compilation errors during this step, ensure that you've installed all of the required dependencies.)
 
 ```
-# pip install -r requirements.txt
+# sudo pip install -r requirements.txt
 ```
 
 ## Configuration
@@ -235,7 +235,7 @@ If the test service does not run, or you cannot reach the NetBox home page, some
 We'll set up a simple HTTP front end using [gunicorn](http://gunicorn.org/) for the purposes of this guide. For web servers, we provide example configurations for both [nginx](https://www.nginx.com/resources/wiki/) and [Apache](http://httpd.apache.org/docs/2.4). (You are of course free to use whichever combination of HTTP and WSGI services you'd like.) We'll also use [supervisord](http://supervisord.org/) for service persistence. 
 
 ```
-# apt-get install gunicorn supervisor
+# sudo apt-get install -y gunicorn supervisor apache2 nginx
 ```
 
 ## nginx Configuration
@@ -243,12 +243,6 @@ We'll set up a simple HTTP front end using [gunicorn](http://gunicorn.org/) for
 The following will serve as a minimal nginx configuration. Be sure to modify your server name and installation path appropriately.
 
 ```
-# apt-get install nginx
-```
-
-Once nginx is installed, proceed with the following configuration:
-
-```
 server {
     listen 80;
 
@@ -358,7 +352,7 @@ Please keep in mind that the configurations provided here are bare minimums requ
 To add SSL support to the installation we'll start by installing the arbitrary precision calculator language.
 
 ```
-# sudo apt-get -y bc
+# sudo apt-get install -y bc
 ```
 
 Next we'll clone Let's Encrypt into /opt/: