Add Docker instructions to CONTRIBUTING.md
Add Docker instructions to CONTRIBUTING.md

Juko8/WoWAnalyzer,fyruna/WoWAnalyzer,hasseboulen/WoWAnalyzer,WoWAnalyzer/WoWAnalyzer,Juko8/WoWAnalyzer,FaideWW/WoWAnalyzer,WoWAnalyzer/WoWAnalyzer,enragednuke/WoWAnalyzer,fyruna/WoWAnalyzer,ronaldpereira/WoWAnalyzer,sMteX/WoWAnalyzer,sMteX/WoWAnalyzer,mwwscott0/WoWAnalyzer,hasseboulen/WoWAnalyzer,yajinni/WoWAnalyzer,hasseboulen/WoWAnalyzer,anom0ly/WoWAnalyzer,anom0ly/WoWAnalyzer,Juko8/WoWAnalyzer,fyruna/WoWAnalyzer,enragednuke/WoWAnalyzer,sMteX/WoWAnalyzer,ronaldpereira/WoWAnalyzer,FaideWW/WoWAnalyzer,WoWAnalyzer/WoWAnalyzer,yajinni/WoWAnalyzer,ronaldpereira/WoWAnalyzer,mwwscott0/WoWAnalyzer,FaideWW/WoWAnalyzer,yajinni/WoWAnalyzer,yajinni/WoWAnalyzer,enragednuke/WoWAnalyzer,anom0ly/WoWAnalyzer,anom0ly/WoWAnalyzer