misc/docker-setup: refactoring function that download scripts
misc/docker-setup: refactoring function that download scripts

ggarnier/tsuru,Endika/tsuru,tsuru/tsuru,hcxiong/tsuru,gwmoura/tsuru,cezarsa/tsuru,RichardKnop/tsuru,gciotta/tsuru,gwmoura/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,guilhermebr/tsuru,cgvarela/tsuru,ggarnier/tsuru,Endika/tsuru,kgrvamsi/tsuru,mderaldo/tsuru,firebitsbr/tsuru,tsuru/tsuru,kgrvamsi/tsuru,jblancett/tsuru,guilhermebr/tsuru,firebitsbr/tsuru,4eek/tsuru,tuxmonteiro/tsuru,hugoantunes/tsuru,cezarsa/tsuru,mderaldo/tsuru,jblancett/tsuru,gciotta/tsuru,tsuru/tsuru,4eek/tsuru,ArxdSilva/tsuru,jblancett/tsuru,cgvarela/tsuru,ArxdSilva/tsuru,ggarnier/tsuru,tuxmonteiro/tsuru,hugoantunes/tsuru,RichardKnop/tsuru,ggarnier/tsuru,firebitsbr/tsuru,mderaldo/tsuru,tsuru/tsuru,cezarsa/tsuru,tuxmonteiro/tsuru,hcxiong/tsuru,gciotta/tsuru,guilhermebr/tsuru,Endika/tsuru,RichardKnop/tsuru,hcxiong/tsuru,gwmoura/tsuru,cgvarela/tsuru,kgrvamsi/tsuru,4eek/tsuru,cezarsa/tsuru,ArxdSilva/tsuru