Ubuntu Server Proxy Config

Hi,

I'm currently Installing Ubuntu server for the first time and attempting to connect to the proxy during the install

' Configure the package manager' and the trying to run an update command / connect to internetafter install

i.e. sudo apt-get update and it fails at about 33% of update

"http:// [ [user] [:pass]@]host[:port]/"

For example I've been entering in

http:// joe.blog:password123@10.12.0.11:8080/

Can someone point me in the right direction or provide assistance.

We are currently connecting to a proxy server at my work