I installed Firefox by doing this:
1. wget
https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/42.0/linux-x86_64/en-US/firefox-42.0.tar.bz2
2. tar -xjvf firefox-42.0.tar.bz2
3. sudo rm -rf /opt/firefox*
4. sudo mv firefox /opt/firefox
5. sudo ln -sf /opt/firefox/firefox /usr/bin/firefox
When I run it on terminal, the only option that I have when right click on Firefox's icon on Dock is "Close". How can I add Firefox to Dock?
sudo apt-get install firefox
into terminal or by installing from software center?