Explicitly install gcc-4.7 in Dockerfile.
Explicitly install gcc-4.7 in Dockerfile.

The "golang" base image has been changed to use a more recent version of
debian, which does not install gcc-4.7 by default.

freakynit/cockroach,nieyy/cockroach,glycerine/cockroach,jmank88/cockroach,yiixiansheng/cockroach,bg451/cockroach,yananzhi/cockroach,jmank88/cockroach,veteranlu/cockroach,hassyma/cockroach,veteranlu/cockroach,paperstreet/cockroach,jess-edwards/cockroach,freakynit/cockroach,il9ue/cockroach,veteranlu/cockroach,freakynit/cockroach,domluna/cockroach,il9ue/cockroach,jess-edwards/cockroach,yosiat/cockroach,briceburg/cockroach,Kevin-GuanJian/cockroach,nkhuyu/cockroach,vaibhavarora/cockroach,jamesgraves/cockroach,jgautheron/cockroach,nieyy/cockroach,maxlang/cockroach,yosiat/cockroach,briceburg/cockroach,es-chow/cockroach,yiixiansheng/cockroach,linearb/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,arjun4084346/cockroach,petermattis/cockroach,XuWanHong/cockroach-1,Kevin-GuanJian/cockroach,ajayaa/cockroach,nkhuyu/cockroach,SustainFund/cockroach,bg451/cockroach,chrisseto/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,fengshao0907/cockroach,mbertschler/cockroach,slavau/cockroach,loucash/cockroach,arypurnomoz/cockroach,domluna/cockroach,nieyy/cockroach,vivekmenezes/cockroach,linearb/cockroach,jmank88/cockroach,petermattis/cockroach,glycerine/cockroach,loucash/cockroach,cuongdo/cockroach,jamesgraves/cockroach,alunarbeach/cockroach,veteranlu/cockroach,sunya123/cockroach,jess-edwards/cockroach,abhishekgahlot/cockroach,briceburg/cockroach,freakynit/cockroach,c4pt0r/cockroach,briceburg/cockroach,hassyma/cockroach,Abioy/cockroach,petermattis/cockroach,arjun4084346/cockroach,mbertschler/cockroach,XuWanHong/cockroach-1,GokulSrinivas/cockroach,paperstreet/cockroach,slavau/cockroach,Kevin-GuanJian/cockroach,fengshao0907/cockroach,sunya123/cockroach,es-chow/cockroach,GokulSrinivas/cockroach,arypurnomoz/cockroach,jamesgraves/cockroach,ajayaa/cockroach,jgautheron/cockroach,ngaut/cockroach,maxlang/cockroach,marcuswestin/cockroach,nieyy/cockroach,GokulSrinivas/cockroach,veteranlu/cockroach,arypurnomoz/cockroach,cockroachdb/cockroach,XisiHuang/cockroach,jess-edwards/cockroach,cuongdo/cockroach,linearb/cockroach,veteranlu/cockroach,mbonaci/cockroach,marcuswestin/cockroach,Abioy/cockroach,cuongdo/cockroach,paperstreet/cockroach,jgautheron/cockroach,c4pt0r/cockroach,arypurnomoz/cockroach,glycerine/cockroach,ngaut/cockroach,vaibhavarora/cockroach,il9ue/cockroach,c4pt0r/cockroach,petermattis/cockroach,glycerine/cockroach,arjun4084346/cockroach,abhishekgahlot/cockroach,loucash/cockroach,vivekmenezes/cockroach,hassyma/cockroach,fengshao0907/cockroach,maxlang/cockroach,petermattis/cockroach,arjun4084346/cockroach,vaibhavarora/cockroach,ngaut/cockroach,hassyma/cockroach,iqstack/cockroach,il9ue/cockroach,jess-edwards/cockroach,mbonaci/cockroach,c4pt0r/cockroach,sunya123/cockroach,jgautheron/cockroach,mbonaci/cockroach,alunarbeach/cockroach,SustainFund/cockroach,Abioy/cockroach,XisiHuang/cockroach,jamesgraves/cockroach,nkhuyu/cockroach,vivekmenezes/cockroach,fengshao0907/cockroach,cuongdo/cockroach,sunya123/cockroach,arjun4084346/cockroach,chrisseto/cockroach,es-chow/cockroach,fengshao0907/cockroach,XisiHuang/cockroach,linearb/cockroach,jamesgraves/cockroach,yosiat/cockroach,alex/cockroach,il9ue/cockroach,XuWanHong/cockroach-1,SustainFund/cockroach,ajayaa/cockroach,veteranlu/cockroach,cuongdo/cockroach,SustainFund/cockroach,mbertschler/cockroach,yiixiansheng/cockroach,XuWanHong/cockroach-1,iqstack/cockroach,domluna/cockroach,freakynit/cockroach,GokulSrinivas/cockroach,bg451/cockroach,petermattis/cockroach,bg451/cockroach,loucash/cockroach,maxlang/cockroach,yosiat/cockroach,mbertschler/cockroach,jamesgraves/cockroach,vaibhavarora/cockroach,sunya123/cockroach,linearb/cockroach,slavau/cockroach,Kevin-GuanJian/cockroach,iqstack/cockroach,Abioy/cockroach,arypurnomoz/cockroach,maxlang/cockroach,arypurnomoz/cockroach,c4pt0r/cockroach,ajayaa/cockroach,mbonaci/cockroach,loucash/cockroach,chrisseto/cockroach,chrisseto/cockroach,jess-edwards/cockroach,maxlang/cockroach,briceburg/cockroach,cockroachdb/cockroach,yiixiansheng/cockroach,es-chow/cockroach,sunya123/cockroach,alunarbeach/cockroach,XisiHuang/cockroach,cuongdo/cockroach,sunya123/cockroach,glycerine/cockroach,glycerine/cockroach,c4pt0r/cockroach,es-chow/cockroach,abhishekgahlot/cockroach,mbertschler/cockroach,XuWanHong/cockroach-1,es-chow/cockroach,paperstreet/cockroach,GokulSrinivas/cockroach,Abioy/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,arjun4084346/cockroach,chrisseto/cockroach,loucash/cockroach,alunarbeach/cockroach,alunarbeach/cockroach,paperstreet/cockroach,abhishekgahlot/cockroach,jmank88/cockroach,il9ue/cockroach,bg451/cockroach,XisiHuang/cockroach,glycerine/cockroach,veteranlu/cockroach,Kevin-GuanJian/cockroach,alex/cockroach,yananzhi/cockroach,alex/cockroach,yiixiansheng/cockroach,abhishekgahlot/cockroach,nkhuyu/cockroach,paperstreet/cockroach,domluna/cockroach,domluna/cockroach,jmank88/cockroach,alex/cockroach,cockroachdb/cockroach,yananzhi/cockroach,ajayaa/cockroach,vivekmenezes/cockroach,il9ue/cockroach,yananzhi/cockroach,petermattis/cockroach,ngaut/cockroach,nieyy/cockroach,yananzhi/cockroach,petermattis/cockroach,nkhuyu/cockroach,alunarbeach/cockroach,yiixiansheng/cockroach,marcuswestin/cockroach,sunya123/cockroach,domluna/cockroach,yosiat/cockroach,arjun4084346/cockroach,ngaut/cockroach,marcuswestin/cockroach,mbertschler/cockroach,fengshao0907/cockroach,alex/cockroach,yananzhi/cockroach,hassyma/cockroach,hassyma/cockroach,XisiHuang/cockroach,jess-edwards/cockroach,briceburg/cockroach,XuWanHong/cockroach-1,Kevin-GuanJian/cockroach,jgautheron/cockroach,jmank88/cockroach,SustainFund/cockroach,maxlang/cockroach,slavau/cockroach,linearb/cockroach,freakynit/cockroach,ajayaa/cockroach,jamesgraves/cockroach,marcuswestin/cockroach,cockroachdb/cockroach,jgautheron/cockroach,domluna/cockroach,paperstreet/cockroach,alex/cockroach,il9ue/cockroach,cuongdo/cockroach,iqstack/cockroach,GokulSrinivas/cockroach,cockroachdb/cockroach,nkhuyu/cockroach,mbonaci/cockroach,ngaut/cockroach,maxlang/cockroach,marcuswestin/cockroach,paperstreet/cockroach,marcuswestin/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,iqstack/cockroach,mbertschler/cockroach,slavau/cockroach,yosiat/cockroach,cuongdo/cockroach,XuWanHong/cockroach-1,mbonaci/cockroach,nieyy/cockroach,vaibhavarora/cockroach,yananzhi/cockroach,iqstack/cockroach,linearb/cockroach,nieyy/cockroach,nieyy/cockroach,abhishekgahlot/cockroach,bg451/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach,jmank88/cockroach,bg451/cockroach,cockroachdb/cockroach,SustainFund/cockroach,chrisseto/cockroach,es-chow/cockroach,Kevin-GuanJian/cockroach,ngaut/cockroach,glycerine/cockroach,iqstack/cockroach,marcuswestin/cockroach,slavau/cockroach,Abioy/cockroach