ERPNext production installation problem on fresh ubuntu 16.04 LTS

Install / Update Deployment
1

hello

i am trying to install erpnext production instance on fresh ubuntu 16.04 LTS 32 bit, but every time i face this problem:

Screenshot from 2017-03-05 06-54-40.png1366×768 269 KB

i think this is due to issue in my connection stability but not sure i want your confirmation please.

steps which i did:
$ wget https://raw.githubusercontent.com/frappe/bench/master/playbooks/install.py
inside my user directory and then > sudo python install.py --production

2

run :
apt-get update
apt-get- upgrade

regards

3

thanks solosoft but the problem was in connection stability so here how to fix:
change your ISP and/or use good dns server like google dns 8.8.8.8 and 8.8.4.4