Build only first time lightbox is opened (#5941)
Build only first time lightbox is opened (#5941)

Build only first time lightbox is opened.
BenDz/amphtml,DAC-f1h-dev/amphtml,jpettitt/amphtml,aghassemi/amphtml,tdrl/amphtml,shawnbuso/amphtml,sklobovskaya/amphtml,Gregable/amphtml,luciancrasovan/amphtml,adup-tech/amphtml,erwinmombay/amphtml,kmh287/amphtml,jpettitt/amphtml,gumgum/amphtml,powdercloud/amphtml,src-code/amphtml,smartadserver/amphtml,taboola/amphtml,JuliusThms/amphtml,powdercloud/amphtml,rlugojr/amphtml,spotxchange/amphtml,fullspeed-sp/amphtml,ampproject/amphtml,sortable/amphtml,pietergreyling/amphtml,rajkumarsrk/amphtml,bpaduch/amphtml,donttrustthisbot/amphtml,erwinmombay/amphtml,BenDz/amphtml,mhc-gh/amphtml,clawr/amphtml,chaveznvg/amphtml,camelburrito/amphtml,Adtoma/amphtml,lzanol/amphtml,comScore/amphtml,shawnbuso/amphtml,camelburrito/amphtml,ampproject/amphtml,engtat/amphtml,triplelift/amphtml,taboola/amphtml,danielrozenberg/amphtml,mlb7687/amphtml,nexxtv/amphtml,media-net/amphtml,gumgum/amphtml,yieldmo/amphtml,yieldbot/amphtml,pedjoni8/amphtml,bpaduch/amphtml,jridgewell/amphtml,kixer-com/amphtml,mhc-gh/amphtml,luciancrasovan/amphtml,Gregable/amphtml,jridgewell/amphtml,taboola/amphtml,engtat/amphtml,clawr/amphtml,jlucero-contentad/amphtml,arealit/amphtml,yieldmo/amphtml,ampproject/amphtml,donttrustthisbot/amphtml,kmh287/amphtml,cory-work/amphtml,keithwrightbos/amphtml,mlb7687/amphtml,laterpay/amphtml,pedjoni8/amphtml,donttrustthisbot/amphtml,DAC-f1h-dev/amphtml,rsimha-amp/amphtml,vmarteev/amphtml,interspacejp/amphtml,DistroScale/amphtml,ruturajv-media-net/amphtml,lannka/amphtml,sebastianbenz/amphtml,prateekbh/amphtml,triplelift/amphtml,jlucero-contentad/amphtml,rsimha-amp/amphtml,techhtml/amphtml,kamtschatka/amphtml,src-code/amphtml,danielrozenberg/amphtml,yandex-pcode/amphtml,ruturajv-media-net/amphtml,comScore/amphtml,smartadserver/amphtml,zhangsu/amphtml,burtcorp/amphtml,mhc-gh/amphtml,kamtschatka/amphtml,DAC-f1h-dev/amphtml,Mobusi-ads/amphtml,tlong2/amphtml,adiant/amphtml,lzanol/amphtml,luciancrasovan/amphtml,sharethrough/amphtml,adup-tech/amphtml,sklobovskaya/amphtml,ruturajv-media-net/amphtml,rsimha-amp/amphtml,zhucl/amphtml,rlugojr/amphtml,jmadler/amphtml,interspacejp/amphtml,wjfang/amphtml,fullspeed-sp/amphtml,keithwrightbos/amphtml,smartadserver/amphtml,donttrustthisbot/amphtml,vmarteev/amphtml,adup-tech/amphtml,kmh287/amphtml,yieldmo/amphtml,wjfang/amphtml,widespace-os/amphtml,cvializ/amphtml,DarXector/amphtml,ADITION/amphtml,JuliusThms/amphtml,shawnbuso/amphtml,arealit/amphtml,smartadserver/amphtml,zhouyx/amphtml,koshka/amphtml,sortable/amphtml,ecoron/amphtml,ecoron/amphtml,alanorozco/amphtml,cory-work/amphtml,ecoron/amphtml,dotandads/amphtml,vmarteev/amphtml,danielrozenberg/amphtml,cory-work/amphtml,rsimha-amp/amphtml,DistroScale/amphtml,zhouyx/amphtml,lzanol/amphtml,mhc-gh/amphtml,rlugojr/amphtml,gumgum/amphtml,zhucl/amphtml,jdelhommeau/amphtml,ADITION/amphtml,vmarteev/amphtml,powdercloud/amphtml,danielrozenberg/amphtml,kamtschatka/amphtml,DistroScale/amphtml,kmh287/amphtml,voyagegroup/amphtml,BenDz/amphtml,erwinmombay/amphtml,comScore/amphtml,yieldbot/amphtml,rajkumarsrk/amphtml,jdelhommeau/amphtml,zhangsu/amphtml,tlong2/amphtml,pedjoni8/amphtml,yieldmo/amphtml,gumgum/amphtml,chaveznvg/amphtml,zhucl/amphtml,laterpay/amphtml,camelburrito/amphtml,sortable/amphtml,ampproject/amphtml,pedjoni8/amphtml,lannka/amphtml,BenDz/amphtml,tlong2/amphtml,koshka/amphtml,gumgum/amphtml,kixer-com/amphtml,engtat/amphtml,zhucl/amphtml,triplelift/amphtml,comScore/amphtml,nexxtv/amphtml,jpettitt/amphtml,src-code/amphtml,yandex-pcode/amphtml,sebastianbenz/amphtml,luciancrasovan/amphtml,yieldmo/amphtml,Mobusi-ads/amphtml,honeybadgerdontcare/amphtml,interspacejp/amphtml,prateekbh/amphtml,jpettitt/amphtml,tdrl/amphtml,voyagegroup/amphtml,shawnbuso/amphtml,rifler/amphtml,burtcorp/amphtml,zhucl/amphtml,taboola/amphtml,bpaduch/amphtml,jdelhommeau/amphtml,jridgewell/amphtml,rajkumarsrk/amphtml,alanorozco/amphtml,yandex-pcode/amphtml,rsimha-amp/amphtml,aghassemi/amphtml,jridgewell/amphtml,shawnbuso/amphtml,mlb7687/amphtml,kmh287/amphtml,adup-tech/amphtml,ampproject/amphtml,erwinmombay/amphtml,alanorozco/amphtml,pietergreyling/amphtml,sharethrough/amphtml,cory-work/amphtml,sklobovskaya/amphtml,zhangsu/amphtml,nexxtv/amphtml,koshka/amphtml,adiant/amphtml,yieldbot/amphtml,rifler/amphtml,pedjoni8/amphtml,burtcorp/amphtml,sharethrough/amphtml,tdrl/amphtml,zhangsu/amphtml,yieldmo/amphtml,mhc-gh/amphtml,burtcorp/amphtml,triplelift/amphtml,mlb7687/amphtml,ADITION/amphtml,rifler/amphtml,pietergreyling/amphtml,spotxchange/amphtml,spotxchange/amphtml,DarXector/amphtml,Adtoma/amphtml,wjfang/amphtml,wjfang/amphtml,zhouyx/amphtml,jridgewell/amphtml,jpettitt/amphtml,BenDz/amphtml,widespace-os/amphtml,media-net/amphtml,sriramkrish85/amphtml,bpaduch/amphtml,tdrl/amphtml,tdrl/amphtml,jmadler/amphtml,zhouyx/amphtml,honeybadgerdontcare/amphtml,clawr/amphtml,adiant/amphtml,zhouyx/amphtml,JuliusThms/amphtml,Mobusi-ads/amphtml,Adtoma/amphtml,interspacejp/amphtml,media-net/amphtml,Gregable/amphtml,sklobovskaya/amphtml,spotxchange/amphtml,wjfang/amphtml,widespace-os/amphtml,lzanol/amphtml,yieldmo/amphtml,camelburrito/amphtml,pedjoni8/amphtml,rifler/amphtml,rajkumarsrk/amphtml,media-net/amphtml,kmh287/amphtml,techhtml/amphtml,mhc-gh/amphtml,jpettitt/amphtml,koshka/amphtml,powdercloud/amphtml,rifler/amphtml,powdercloud/amphtml,kamtschatka/amphtml,adiant/amphtml,lzanol/amphtml,tlong2/amphtml,arealit/amphtml,cvializ/amphtml,luciancrasovan/amphtml,ampproject/amphtml,ruturajv-media-net/amphtml,laterpay/amphtml,Mobusi-ads/amphtml,engtat/amphtml,taboola/amphtml,aghassemi/amphtml,dotandads/amphtml,widespace-os/amphtml,alanorozco/amphtml,fullspeed-sp/amphtml,techhtml/amphtml,cory-work/amphtml,alanorozco/amphtml,vmarteev/amphtml,koshka/amphtml,media-net/amphtml,adup-tech/amphtml,kixer-com/amphtml,DarXector/amphtml,jlucero-contentad/amphtml,avimehta/amphtml,nexxtv/amphtml,DAC-f1h-dev/amphtml,prateekbh/amphtml,mhc-gh/amphtml,jpettitt/amphtml,yieldbot/amphtml,comScore/amphtml,smartadserver/amphtml,jdelhommeau/amphtml,comScore/amphtml,rlugojr/amphtml,engtat/amphtml,sriramkrish85/amphtml,laterpay/amphtml,JuliusThms/amphtml,gumgum/amphtml,DistroScale/amphtml,keithwrightbos/amphtml,sortable/amphtml,bpaduch/amphtml,cvializ/amphtml,comScore/amphtml,luciancrasovan/amphtml,fullspeed-sp/amphtml,smartadserver/amphtml,chaveznvg/amphtml,powdercloud/amphtml,kamtschatka/amphtml,Adtoma/amphtml,yieldbot/amphtml,sebastianbenz/amphtml,wjfang/amphtml,keithwrightbos/amphtml,rifler/amphtml,BenDz/amphtml,sriramkrish85/amphtml,rajkumarsrk/amphtml,sriramkrish85/amphtml,Gregable/amphtml,techhtml/amphtml,yieldbot/amphtml,avimehta/amphtml,zhouyx/amphtml,zhangsu/amphtml,danielrozenberg/amphtml,avimehta/amphtml,shawnbuso/amphtml,keithwrightbos/amphtml,burtcorp/amphtml,alanorozco/amphtml,Mobusi-ads/amphtml,donttrustthisbot/amphtml,DistroScale/amphtml,powdercloud/amphtml,mhc-gh/amphtml,tlong2/amphtml,prateekbh/amphtml,sklobovskaya/amphtml,prateekbh/amphtml,nexxtv/amphtml,spotxchange/amphtml,dotandads/amphtml,bpaduch/amphtml,donttrustthisbot/amphtml,jdelhommeau/amphtml,dotandads/amphtml,luciancrasovan/amphtml,aghassemi/amphtml,yandex-pcode/amphtml,danielrozenberg/amphtml,avimehta/amphtml,honeybadgerdontcare/amphtml,cvializ/amphtml,dotandads/amphtml,tdrl/amphtml,spotxchange/amphtml,Adtoma/amphtml,kixer-com/amphtml,sebastianbenz/amphtml,honeybadgerdontcare/amphtml,rajkumarsrk/amphtml,rlugojr/amphtml,clawr/amphtml,techhtml/amphtml,taboola/amphtml,taboola/amphtml,honeybadgerdontcare/amphtml,mlb7687/amphtml,yandex-pcode/amphtml,voyagegroup/amphtml,vmarteev/amphtml,pietergreyling/amphtml,widespace-os/amphtml,JuliusThms/amphtml,bpaduch/amphtml,burtcorp/amphtml,ADITION/amphtml,jmadler/amphtml,cvializ/amphtml,kamtschatka/amphtml,wjfang/amphtml,zhangsu/amphtml,src-code/amphtml,clawr/amphtml,camelburrito/amphtml,interspacejp/amphtml,jdelhommeau/amphtml,src-code/amphtml,jlucero-contentad/amphtml,lannka/amphtml,aghassemi/amphtml,zhouyx/amphtml,adiant/amphtml,gumgum/amphtml,camelburrito/amphtml,ecoron/amphtml,jpettitt/amphtml,fullspeed-sp/amphtml,jridgewell/amphtml,alanorozco/amphtml,Gregable/amphtml,nexxtv/amphtml,ampproject/amphtml,media-net/amphtml,rsimha-amp/amphtml,erwinmombay/amphtml,Gregable/amphtml,nexxtv/amphtml,rlugojr/amphtml,jlucero-contentad/amphtml,sklobovskaya/amphtml,jmadler/amphtml,honeybadgerdontcare/amphtml,voyagegroup/amphtml,engtat/amphtml,chaveznvg/amphtml,dotandads/amphtml,src-code/amphtml,donttrustthisbot/amphtml,triplelift/amphtml,arealit/amphtml,DarXector/amphtml,laterpay/amphtml,yandex-pcode/amphtml,sharethrough/amphtml,Gregable/amphtml,rsimha-amp/amphtml,rajkumarsrk/amphtml,DarXector/amphtml,DarXector/amphtml,lannka/amphtml,arealit/amphtml,ecoron/amphtml,kixer-com/amphtml,mlb7687/amphtml,jmadler/amphtml,sebastianbenz/amphtml,interspacejp/amphtml,laterpay/amphtml,lannka/amphtml,pietergreyling/amphtml,sriramkrish85/amphtml,Gregable/amphtml,DAC-f1h-dev/amphtml,shawnbuso/amphtml,adiant/amphtml,vmarteev/amphtml,DistroScale/amphtml,Adtoma/amphtml,lannka/amphtml,avimehta/amphtml,ADITION/amphtml,voyagegroup/amphtml,sklobovskaya/amphtml,keithwrightbos/amphtml,sortable/amphtml,sebastianbenz/amphtml,lannka/amphtml,sriramkrish85/amphtml,arealit/amphtml,jridgewell/amphtml,keithwrightbos/amphtml,techhtml/amphtml,zhucl/amphtml,kixer-com/amphtml,chaveznvg/amphtml,danielrozenberg/amphtml,erwinmombay/amphtml,adup-tech/amphtml,cory-work/amphtml,JuliusThms/amphtml,fullspeed-sp/amphtml,honeybadgerdontcare/amphtml,jlucero-contentad/amphtml,triplelift/amphtml,alanorozco/amphtml,ruturajv-media-net/amphtml,media-net/amphtml,lzanol/amphtml,sortable/amphtml,ampproject/amphtml,arealit/amphtml,jmadler/amphtml,ecoron/amphtml,danielrozenberg/amphtml,pietergreyling/amphtml,tlong2/amphtml,cory-work/amphtml,engtat/amphtml,voyagegroup/amphtml,aghassemi/amphtml,adiant/amphtml,avimehta/amphtml,sharethrough/amphtml,camelburrito/amphtml,media-net/amphtml,clawr/amphtml,sharethrough/amphtml,Mobusi-ads/amphtml,cvializ/amphtml,widespace-os/amphtml,zhucl/amphtml,chaveznvg/amphtml,ruturajv-media-net/amphtml,prateekbh/amphtml,kixer-com/amphtml,koshka/amphtml,DAC-f1h-dev/amphtml,clawr/amphtml,prateekbh/amphtml,yandex-pcode/amphtml,voyagegroup/amphtml