How to include social's icons like gitHub and linkedin in ModernCv?

I am using modernCv, classic style and I need to include my linkedIn and gitHub icons next to my account address in my cv. None of the solutions mentioned here nor here have worked for me. Do you have any suggestions?

Package/font fontawesome provides these symbols:

\documentclass{article}
\usepackage{fontawesome}

\begin{document}

• I can't manage to use the \faStackOverflow on sharelatex even thought \faGithub does work. I'm using LuaLatex to compile. The error I get is the generic Undefined control sequence – Diego Aguado Jan 8 '18 at 13:26
• @DiegoAgher The example works with the recent CTAN version 4.6.3.2 (fontawesome.sty reports 4.6.3.1). Maybe, ShareLaTeX uses an older version. The ChangeLog of the documentation does not tell, which symbol was introduced in which version. – Heiko Oberdiek Jan 8 '18 at 17:10