website: update docker to not parallel [GH-4428]
website: update docker to not parallel [GH-4428]

rivy/vagrant,gpkfr/vagrant,jean/vagrant,Chhed13/vagrant,PatOShea/vagrant,gbarberi/vagrant,h4ck3rm1k3/vagrant,tomfanning/vagrant,tschortsch/vagrant,fnewberg/vagrant,mpoeter/vagrant,tschortsch/vagrant,invernizzi-at-google/vagrant,doy/vagrant,Endika/vagrant,krig/vagrant,modulexcite/vagrant,darkn3rd/vagrant,kamigerami/vagrant,justincampbell/vagrant,bheuvel/vagrant,justincampbell/vagrant,iNecas/vagrant,senglin/vagrant,shtouff/vagrant,genome21/vagrant,philoserf/vagrant,apertoso/vagrant,johntron/vagrant,benh57/vagrant,stephancom/vagrant,signed8bit/vagrant,nickryand/vagrant,doy/vagrant,legal90/vagrant,gitebra/vagrant,bdwyertech/vagrant,mwarren/vagrant,doy/vagrant,Chhunlong/vagrant,patrys/vagrant,wangfakang/vagrant,marxarelli/vagrant,wkolean/vagrant,kamigerami/vagrant,pwnall/vagrant,miguel250/vagrant,dhoer/vagrant,Sgoettschkes/vagrant,teotihuacanada/vagrant,janek-warchol/vagrant,signed8bit/vagrant,lonniev/vagrant,jkburges/vagrant,jkburges/vagrant,teotihuacanada/vagrant,cgvarela/vagrant,tbarrongh/vagrant,darkn3rd/vagrant,dustymabe/vagrant,jberends/vagrant,philoserf/vagrant,chrisvire/vagrant,mitchellh/vagrant,ferventcoder/vagrant,jfchevrette/vagrant,sni/vagrant,mwrock/vagrant,cgvarela/vagrant,wkolean/vagrant,kamazee/vagrant,apertoso/vagrant,mkuzmin/vagrant,modulexcite/vagrant,gajdaw/vagrant,chrisroberts/vagrant,mkuzmin/vagrant,jberends/vagrant,tbarrongh/vagrant,iNecas/vagrant,gbarberi/vagrant,theist/vagrant,rivy/vagrant,jmanero/vagrant,zsjohny/vagrant,channui/vagrant,gpkfr/vagrant,theist/vagrant,crashlytics/vagrant,tbriggs-curse/vagrant,muhanadra/vagrant,cgvarela/vagrant,mitchellh/vagrant,ferventcoder/vagrant,patrys/vagrant,muhanadra/vagrant,kamazee/vagrant,sax/vagrant,muhanadra/vagrant,benh57/vagrant,senglin/vagrant,krig/vagrant,mpoeter/vagrant,myrjola/vagrant,otagi/vagrant,philwrenn/vagrant,BlakeMesdag/vagrant,Avira/vagrant,jmanero/vagrant,sideci-sample/sideci-sample-vagrant,bryson/vagrant,dharmab/vagrant,PatOShea/vagrant,gbarberi/vagrant,Endika/vagrant,otagi/vagrant,myrjola/vagrant,denisbr/vagrant,Chhed13/vagrant,aneeshusa/vagrant,kamigerami/vagrant,bshurts/vagrant,gitebra/vagrant,chrisvire/vagrant,gpkfr/vagrant,PatOShea/vagrant,theist/vagrant,jtopper/vagrant,nickryand/vagrant,jean/vagrant,invernizzi-at-google/vagrant,jhoblitt/vagrant,mkuzmin/vagrant,dharmab/vagrant,invernizzi-at-google/vagrant,dustymabe/vagrant,kamigerami/vagrant,juiceinc/vagrant,dustymabe/vagrant,blueyed/vagrant,teotihuacanada/vagrant,bryson/vagrant,kalabiyau/vagrant,lukebakken/vagrant,jkburges/vagrant,PatrickLang/vagrant,janek-warchol/vagrant,clinstid/vagrant,ianmiell/vagrant,clinstid/vagrant,philoserf/vagrant,johntron/vagrant,apertoso/vagrant,bshurts/vagrant,tjanez/vagrant,jberends/vagrant,aneeshusa/vagrant,TheBigBear/vagrant,senglin/vagrant,krig/vagrant,petems/vagrant,jfchevrette/vagrant,sni/vagrant,ferventcoder/vagrant,tbriggs-curse/vagrant,denisbr/vagrant,lukebakken/vagrant,sax/vagrant,Chhunlong/vagrant,nickryand/vagrant,mkuzmin/vagrant,taliesins/vagrant,janek-warchol/vagrant,aneeshusa/vagrant,myrjola/vagrant,miguel250/vagrant,stephancom/vagrant,teotihuacanada/vagrant,legal90/vagrant,bdwyertech/vagrant,dharmab/vagrant,genome21/vagrant,jberends/vagrant,petems/vagrant,ArloL/vagrant,miguel250/vagrant,blueyed/vagrant,crashlytics/vagrant,pwnall/vagrant,jtopper/vagrant,petems/vagrant,TheBigBear/vagrant,crashlytics/vagrant,chrisroberts/vagrant,ianmiell/vagrant,zsjohny/vagrant,lonniev/vagrant,signed8bit/vagrant,theist/vagrant,taliesins/vagrant,tjanez/vagrant,juiceinc/vagrant,h4ck3rm1k3/vagrant,benizi/vagrant,carlosefr/vagrant,mwrock/vagrant,jfchevrette/vagrant,gajdaw/vagrant,gajdaw/vagrant,modulexcite/vagrant,aaam/vagrant,jhoblitt/vagrant,mitchellh/vagrant,johntron/vagrant,justincampbell/vagrant,patrys/vagrant,nickryand/vagrant,Chhed13/vagrant,kalabiyau/vagrant,fnewberg/vagrant,Sgoettschkes/vagrant,tjanez/vagrant,vamegh/vagrant,zsjohny/vagrant,vamegh/vagrant,signed8bit/vagrant,Endika/vagrant,chrisroberts/vagrant,taliesins/vagrant,genome21/vagrant,h4ck3rm1k3/vagrant,wangfakang/vagrant,Avira/vagrant,tschortsch/vagrant,mwarren/vagrant,crashlytics/vagrant,PatOShea/vagrant,dhoer/vagrant,jean/vagrant,wangfakang/vagrant,tomfanning/vagrant,MiLk/vagrant,iNecas/vagrant,tbarrongh/vagrant,kamazee/vagrant,mwrock/vagrant,philwrenn/vagrant,chrisvire/vagrant,gpkfr/vagrant,bheuvel/vagrant,bheuvel/vagrant,obnoxxx/vagrant,sax/vagrant,otagi/vagrant,janek-warchol/vagrant,evverx/vagrant,benh57/vagrant,mwarren/vagrant,benizi/vagrant,juiceinc/vagrant,rivy/vagrant,h4ck3rm1k3/vagrant,PatrickLang/vagrant,loren-osborn/vagrant,myrjola/vagrant,muhanadra/vagrant,cgvarela/vagrant,blueyed/vagrant,petems/vagrant,channui/vagrant,johntron/vagrant,vamegh/vagrant,TheBigBear/vagrant,sax/vagrant,wangfakang/vagrant,gbarberi/vagrant,aneeshusa/vagrant,bdwyertech/vagrant,bheuvel/vagrant,tbarrongh/vagrant,ianmiell/vagrant,kalabiyau/vagrant,bdwyertech/vagrant,zsjohny/vagrant,bryson/vagrant,Chhed13/vagrant,modulexcite/vagrant,ArloL/vagrant,ArloL/vagrant,shtouff/vagrant,jkburges/vagrant,stephancom/vagrant,loren-osborn/vagrant,BlakeMesdag/vagrant,dhoer/vagrant,tbriggs-curse/vagrant,jhoblitt/vagrant,juiceinc/vagrant,stephancom/vagrant,aaam/vagrant,jmanero/vagrant,lonniev/vagrant,dharmab/vagrant,sni/vagrant,tschortsch/vagrant,krig/vagrant,tjanez/vagrant,Avira/vagrant,pwnall/vagrant,ArloL/vagrant,bryson/vagrant,shtouff/vagrant,tknerr/vagrant,loren-osborn/vagrant,Sgoettschkes/vagrant,benh57/vagrant,dustymabe/vagrant,fnewberg/vagrant,bshurts/vagrant,lonniev/vagrant,justincampbell/vagrant,evverx/vagrant,otagi/vagrant,BlakeMesdag/vagrant,Sgoettschkes/vagrant,invernizzi-at-google/vagrant,kalabiyau/vagrant,Avira/vagrant,loren-osborn/vagrant,sni/vagrant,jfchevrette/vagrant,darkn3rd/vagrant,marxarelli/vagrant,denisbr/vagrant,obnoxxx/vagrant,tbriggs-curse/vagrant,PatrickLang/vagrant,channui/vagrant,carlosefr/vagrant,Endika/vagrant,darkn3rd/vagrant,senglin/vagrant,jtopper/vagrant,MiLk/vagrant,benizi/vagrant,patrys/vagrant,rivy/vagrant,tomfanning/vagrant,aaam/vagrant,PatrickLang/vagrant,philoserf/vagrant,blueyed/vagrant,doy/vagrant,legal90/vagrant,dhoer/vagrant,gitebra/vagrant,mwrock/vagrant,evverx/vagrant,lukebakken/vagrant,vamegh/vagrant,TheBigBear/vagrant,tknerr/vagrant,ianmiell/vagrant,taliesins/vagrant,Chhunlong/vagrant,tknerr/vagrant,shtouff/vagrant,marxarelli/vagrant,miguel250/vagrant,mwarren/vagrant,marxarelli/vagrant,mpoeter/vagrant,jmanero/vagrant,chrisroberts/vagrant,Chhunlong/vagrant,benizi/vagrant,fnewberg/vagrant,obnoxxx/vagrant,sideci-sample/sideci-sample-vagrant,clinstid/vagrant,jean/vagrant,gitebra/vagrant,bshurts/vagrant,wkolean/vagrant,ferventcoder/vagrant,carlosefr/vagrant,mpoeter/vagrant,apertoso/vagrant,denisbr/vagrant,jtopper/vagrant,philwrenn/vagrant,jhoblitt/vagrant,philwrenn/vagrant,sideci-sample/sideci-sample-vagrant,kamazee/vagrant,genome21/vagrant,tknerr/vagrant,mitchellh/vagrant,carlosefr/vagrant,lukebakken/vagrant,aaam/vagrant,legal90/vagrant,pwnall/vagrant,chrisvire/vagrant,wkolean/vagrant,MiLk/vagrant,tomfanning/vagrant