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There is no option to provide the net as param while building the docker images.
So the container doesn’t have internet from inside.
and is common to get this kind of errors

Running in NNNNNNNNN
Err http://http.debian.net wheezy Release.gpg
  Could not resolve 'http.debian.net'

One (stupid) solution is to put in the Docker file

RUN echo "nameserver 8.8.8.8" > /etc/resolv.conf; cat /etc/resolv.conf

Another is to help Docker with the networking.

Here is a solution is pointed here

# Forward chain between docker0 and eth0
iptables -A FORWARD -i docker0 -o eth0 -j ACCEPT
iptables -A FORWARD -i eth0 -o docker0 -j ACCEPT

# IPv6 chain if needed
ip6tables -A FORWARD -i docker0 -o eth0 -j ACCEPT
ip6tables -A FORWARD -i eth0 -o docker0 -j ACCEPT

And also to configure docker to use a dns server as pointed here

Docker official doc gives instruments to Configure a DNS server for use by Docker

Open the /etc/default/docker file for editing.

$ sudo nano /etc/default/docker

Add a setting for Docker.

DOCKER_OPTS="--dns 8.8.8.8"

Replace 8.8.8.8 with a local DNS server such as 192.168.1.1. You can also specify multiple DNS servers. Separated them with spaces, for example:

–dns 8.8.8.8 –dns 192.168.1.1

Warning: If you’re doing this on a laptop which connects to various networks, make sure to choose a public DNS server.

ps: nm-tool can be used to check local host DNS server

Save and close the file.

Restart the Docker daemon.

$ sudo restart docker

This script will activate gnome-terminal when you press INSERT (the key right to backspace) and will hide it when pressed again.

Using this script is better than tilda or guake or whatever because you can resize the terminal. You can clean the terminal and have all goods you have in normal terminal.

To install it under lubuntu/lxde open ~/config/openbox/lubuntu-rc.xml and add

https://gist.github.com/gudata/4065ad9bb1fd6d82933b

Here is the code for the riseterminal.sh

#/bin/bash
XDO=/usr/bin/xdotool

#TERMINAL_ID=`$XDO  search --name Terminal | /usr/bin/tail -1`

raise_or_fall () {
  TERMINAL_ID=$($XDO search --class gnome-terminal | /usr/bin/tail -1)
  CURRENT_WINDOW_ID=`$XDO getwindowfocus`

  WIDS=`$XDO search --onlyvisible --class gnome-terminal`

  if [ "$CURRENT_WINDOW_ID" -eq "$WIDS" ]
  then
    # zenity --question --text="down"
    $XDO windowminimize $TERMINAL_ID
  else
    # zenity --question --text="up"
    # $XDO windowraise $TERMINAL_ID
    # $XDO windowfocus --sync $TERMINAL_ID
     $XDO windowactivate $TERMINAL_ID
  fi
}

if `ps aux | grep "[g]nome-terminal" > /dev/null`
then
  raise_or_fall
else
  gnome-terminal &
fi

Nice! As I am maniac of  uptime here is nice utility found at http://www.linuxjournal.com/content/tracking-server-uptimes

uptimed. It is similar to the utility that most of us have heard of, uptime, except that it runs as a daemon and logs the system’s uptime instead of just reading info that is lost on a reboot. Uptimed provides a secondary command called uprecords

Here is what we want to do

We have the following case:

Developer workstation windows with putty

Spider.bg – a host which has access to the www.psspy.se server

www.psspy.se – firewalled host – we want to put files here via sftp

What we want to do is to use spider.bg host as a proxy and connect to the psspy.se machine.

Tools that are used –

• download putty from here
• winscp – http://winscp.net/eng/download.php

Here are the screenshots with the steps ….

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