Main now uses real path for root directory.
Main now uses real path for root directory.

Summary: This is to ensure consistency when we later resolve symlinks and check whether they the real path is inside or outside the project.

Test Plan: ci

Reviewed By: marcinkosiba

fbshipit-source-id: 688c2dc

illicitonion/buck,JoelMarcey/buck,JoelMarcey/buck,marcinkwiatkowski/buck,JoelMarcey/buck,sdwilsh/buck,shybovycha/buck,k21/buck,dsyang/buck,justinmuller/buck,daedric/buck,LegNeato/buck,davido/buck,k21/buck,Addepar/buck,kageiit/buck,justinmuller/buck,davido/buck,SeleniumHQ/buck,rmaz/buck,k21/buck,vschs007/buck,LegNeato/buck,shybovycha/buck,shybovycha/buck,davido/buck,grumpyjames/buck,marcinkwiatkowski/buck,k21/buck,facebook/buck,zpao/buck,darkforestzero/buck,marcinkwiatkowski/buck,illicitonion/buck,rmaz/buck,zpao/buck,robbertvanginkel/buck,davido/buck,kageiit/buck,marcinkwiatkowski/buck,illicitonion/buck,robbertvanginkel/buck,k21/buck,grumpyjames/buck,ilya-klyuchnikov/buck,brettwooldridge/buck,brettwooldridge/buck,davido/buck,zhan-xiong/buck,zhan-xiong/buck,rmaz/buck,robbertvanginkel/buck,zpao/buck,shybovycha/buck,darkforestzero/buck,vschs007/buck,rmaz/buck,clonetwin26/buck,illicitonion/buck,daedric/buck,clonetwin26/buck,vschs007/buck,daedric/buck,shybovycha/buck,ilya-klyuchnikov/buck,rmaz/buck,shs96c/buck,sdwilsh/buck,vschs007/buck,illicitonion/buck,justinmuller/buck,SeleniumHQ/buck,shybovycha/buck,daedric/buck,k21/buck,Addepar/buck,illicitonion/buck,ilya-klyuchnikov/buck,grumpyjames/buck,vschs007/buck,daedric/buck,facebook/buck,Addepar/buck,SeleniumHQ/buck,JoelMarcey/buck,JoelMarcey/buck,darkforestzero/buck,JoelMarcey/buck,Addepar/buck,nguyentruongtho/buck,dsyang/buck,justinmuller/buck,dsyang/buck,nguyentruongtho/buck,facebook/buck,grumpyjames/buck,darkforestzero/buck,dsyang/buck,LegNeato/buck,clonetwin26/buck,SeleniumHQ/buck,marcinkwiatkowski/buck,rmaz/buck,robbertvanginkel/buck,darkforestzero/buck,rmaz/buck,zhan-xiong/buck,rmaz/buck,zhan-xiong/buck,daedric/buck,zpao/buck,illicitonion/buck,Addepar/buck,romanoid/buck,LegNeato/buck,brettwooldridge/buck,daedric/buck,daedric/buck,brettwooldridge/buck,zhan-xiong/buck,nguyentruongtho/buck,darkforestzero/buck,vschs007/buck,rmaz/buck,grumpyjames/buck,SeleniumHQ/buck,clonetwin26/buck,romanoid/buck,Addepar/buck,justinmuller/buck,kageiit/buck,zhan-xiong/buck,JoelMarcey/buck,illicitonion/buck,SeleniumHQ/buck,clonetwin26/buck,LegNeato/buck,justinmuller/buck,justinmuller/buck,k21/buck,brettwooldridge/buck,LegNeato/buck,clonetwin26/buck,rmaz/buck,robbertvanginkel/buck,zhan-xiong/buck,marcinkwiatkowski/buck,SeleniumHQ/buck,vschs007/buck,ilya-klyuchnikov/buck,shybovycha/buck,LegNeato/buck,LegNeato/buck,k21/buck,shybovycha/buck,zhan-xiong/buck,darkforestzero/buck,justinmuller/buck,davido/buck,vschs007/buck,rmaz/buck,sdwilsh/buck,zpao/buck,shs96c/buck,shybovycha/buck,shs96c/buck,sdwilsh/buck,grumpyjames/buck,ilya-klyuchnikov/buck,romanoid/buck,illicitonion/buck,SeleniumHQ/buck,zhan-xiong/buck,k21/buck,nguyentruongtho/buck,LegNeato/buck,kageiit/buck,vschs007/buck,ilya-klyuchnikov/buck,shs96c/buck,ilya-klyuchnikov/buck,facebook/buck,facebook/buck,dsyang/buck,illicitonion/buck,k21/buck,robbertvanginkel/buck,romanoid/buck,shs96c/buck,nguyentruongtho/buck,zpao/buck,kageiit/buck,romanoid/buck,rmaz/buck,darkforestzero/buck,illicitonion/buck,justinmuller/buck,darkforestzero/buck,zhan-xiong/buck,marcinkwiatkowski/buck,zhan-xiong/buck,Addepar/buck,darkforestzero/buck,romanoid/buck,clonetwin26/buck,shs96c/buck,JoelMarcey/buck,daedric/buck,SeleniumHQ/buck,grumpyjames/buck,ilya-klyuchnikov/buck,sdwilsh/buck,romanoid/buck,JoelMarcey/buck,nguyentruongtho/buck,marcinkwiatkowski/buck,davido/buck,sdwilsh/buck,rmaz/buck,clonetwin26/buck,grumpyjames/buck,shs96c/buck,facebook/buck,marcinkwiatkowski/buck,clonetwin26/buck,brettwooldridge/buck,vschs007/buck,brettwooldridge/buck,daedric/buck,shybovycha/buck,shs96c/buck,shybovycha/buck,shs96c/buck,grumpyjames/buck,davido/buck,brettwooldridge/buck,Addepar/buck,nguyentruongtho/buck,marcinkwiatkowski/buck,ilya-klyuchnikov/buck,darkforestzero/buck,LegNeato/buck,SeleniumHQ/buck,brettwooldridge/buck,robbertvanginkel/buck,grumpyjames/buck,dsyang/buck,shs96c/buck,brettwooldridge/buck,shybovycha/buck,dsyang/buck,zhan-xiong/buck,romanoid/buck,davido/buck,Addepar/buck,JoelMarcey/buck,Addepar/buck,LegNeato/buck,JoelMarcey/buck,clonetwin26/buck,grumpyjames/buck,sdwilsh/buck,justinmuller/buck,SeleniumHQ/buck,romanoid/buck,robbertvanginkel/buck,dsyang/buck,davido/buck,facebook/buck,vschs007/buck,Addepar/buck,illicitonion/buck,brettwooldridge/buck,davido/buck,dsyang/buck,grumpyjames/buck,k21/buck,ilya-klyuchnikov/buck,dsyang/buck,shs96c/buck,brettwooldridge/buck,dsyang/buck,SeleniumHQ/buck,clonetwin26/buck,clonetwin26/buck,brettwooldridge/buck,robbertvanginkel/buck,illicitonion/buck,daedric/buck,vschs007/buck,LegNeato/buck,vschs007/buck,justinmuller/buck,romanoid/buck,sdwilsh/buck,kageiit/buck,davido/buck,sdwilsh/buck,k21/buck,marcinkwiatkowski/buck,darkforestzero/buck,romanoid/buck,daedric/buck,SeleniumHQ/buck,romanoid/buck,justinmuller/buck,Addepar/buck,daedric/buck,Addepar/buck,shybovycha/buck,robbertvanginkel/buck,sdwilsh/buck,sdwilsh/buck,sdwilsh/buck,davido/buck,JoelMarcey/buck,marcinkwiatkowski/buck,dsyang/buck,justinmuller/buck,kageiit/buck,ilya-klyuchnikov/buck,shs96c/buck,LegNeato/buck,clonetwin26/buck,dsyang/buck,robbertvanginkel/buck,ilya-klyuchnikov/buck,zhan-xiong/buck,sdwilsh/buck,darkforestzero/buck,JoelMarcey/buck,zpao/buck,robbertvanginkel/buck,k21/buck,ilya-klyuchnikov/buck,romanoid/buck,shs96c/buck,robbertvanginkel/buck,marcinkwiatkowski/buck