Updated docker_build.sh to build mesos sources when using CMake.
Updated docker_build.sh to build mesos sources when using CMake.

jpeach/mesos,verizonlabs/mesos,asamerh4/mesos,yuquanshan/customizedMesos,asamerh4/mesos,gsantovena/mesos,verizonlabs/mesos,dforsyth/mesos,chhsia0/mesos,reneploetz/mesos,yuquanshan/customizedMesos,dforsyth/mesos,Aman-Jain-14/customizedMesos,zmalik/mesos,andschwa/mesos,neilconway/mesos,zmalik/mesos,chhsia0/mesos,verizonlabs/mesos,yuquanshan/customizedMesos,kaysoky/mesos,abudnik/mesos,abudnik/mesos,jpeach/mesos,jpeach/mesos,craimbert/mesos,kaysoky/mesos,abudnik/mesos,neilconway/mesos,jpeach/mesos,andschwa/mesos,chhsia0/mesos,andschwa/mesos,Gilbert88/mesos,yuquanshan/customizedMesos,asamerh4/mesos,zmalik/mesos,kaysoky/mesos,kaysoky/mesos,reneploetz/mesos,Aman-Jain-14/customizedMesos,verizonlabs/mesos,zmalik/mesos,andschwa/mesos,Gilbert88/mesos,reneploetz/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,jpeach/mesos,craimbert/mesos,zmalik/mesos,craimbert/mesos,asamerh4/mesos,asamerh4/mesos,Gilbert88/mesos,yuquanshan/customizedMesos,chhsia0/mesos,verizonlabs/mesos,abudnik/mesos,zmalik/mesos,yuquanshan/customizedMesos,chhsia0/mesos,dforsyth/mesos,neilconway/mesos,yuquanshan/customizedMesos,dforsyth/mesos,craimbert/mesos,gsantovena/mesos,chhsia0/mesos,Aman-Jain-14/customizedMesos,verizonlabs/mesos,neilconway/mesos,reneploetz/mesos,jpeach/mesos,abudnik/mesos,andschwa/mesos,neilconway/mesos,abudnik/mesos,Gilbert88/mesos,andschwa/mesos,reneploetz/mesos,craimbert/mesos,gsantovena/mesos,andschwa/mesos,neilconway/mesos,jpeach/mesos,neilconway/mesos,craimbert/mesos,craimbert/mesos,reneploetz/mesos,Gilbert88/mesos,kaysoky/mesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,abudnik/mesos,reneploetz/mesos,verizonlabs/mesos,dforsyth/mesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,Gilbert88/mesos,gsantovena/mesos,asamerh4/mesos,zmalik/mesos,dforsyth/mesos,asamerh4/mesos,chhsia0/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,dforsyth/mesos