Reduced packages installed for docker images. Also reduced layers which will be invalidated by cache.
Reduced packages installed for docker images. Also reduced layers which will be invalidated by cache.

chipsenkbeil/incubator-toree,mariusvniekerk/incubator-toree,Myllyenko/incubator-toree,poplav/incubator-toree,ericchang/incubator-toree,mariusvniekerk/incubator-toree,apache/incubator-toree,lresende/incubator-toree,slowenthal/spark-kernel,kapil-malik/incubator-toree,chipsenkbeil/incubator-toree,asorianostratio/incubator-toree,poplav/incubator-toree,kapil-malik/incubator-toree,hmost1/incubator-toree,lresende/incubator-toree,mariusvniekerk/incubator-toree,kapil-malik/incubator-toree,hmost1/incubator-toree,chipsenkbeil/incubator-toree,ericchang/incubator-toree,Myllyenko/incubator-toree,kapil-malik/incubator-toree,poplav/incubator-toree,mariusvniekerk/incubator-toree,asorianostratio/incubator-toree,Myllyenko/incubator-toree,ericchang/incubator-toree,poplav/incubator-toree,apache/incubator-toree,bpburns/spark-kernel,hmost1/incubator-toree,lresende/incubator-toree,asorianostratio/incubator-toree,apache/incubator-toree,asorianostratio/incubator-toree,poplav/incubator-toree,ericchang/incubator-toree,kapil-malik/incubator-toree,Myllyenko/incubator-toree,hmost1/incubator-toree,lresende/incubator-toree,chipsenkbeil/incubator-toree,ericchang/incubator-toree