Fix stale APT cache when building calicoctl binary
Fix stale APT cache when building calicoctl binary

Before this fix, the Dockerfile for calico/build had apt-get update and apt-get install on separate RUN lines.  This means Docker can cache the filesystem after the update.

After a few days, the apt-cache from that update gets stale, and an apt-get install tries to pull a discontinued point release of some library, and builds fail.

This fixes that by forcing them all on the same RUN line.

CiscoCloud/calico-docker,caseydavenport/calico-containers,projectcalico/calico-containers,TrimBiggs/calico-containers,webwurst/calico-docker,fasaxc/calico-docker,TeaBough/calico-docker,insequent/calico-docker,alexhersh/calico-docker,TrimBiggs/calico-containers,dalanlan/calico-docker,projectcalico/calico-docker,caseydavenport/calico-containers,robbrockbank/calico-containers,Metaswitch/calico-docker,robbrockbank/calico-docker,quater/calico-containers,dalanlan/calico-docker,robbrockbank/calico-containers,TrimBiggs/calico-docker,tomdee/calico-docker,fasaxc/calicoctl,Metaswitch/calico-docker,fasaxc/calicoctl,caseydavenport/calico-containers,caseydavenport/calico-docker,johscheuer/calico-docker,robbrockbank/calico-docker,insequent/calico-docker,projectcalico/calico-containers,alexhersh/calico-docker,TeaBough/calico-docker,Symmetric/calico-docker,robbrockbank/calicoctl,CiscoCloud/calico-docker,robbrockbank/calicoctl,Symmetric/calico-docker,webwurst/calico-docker,caseydavenport/calico-docker,TrimBiggs/calico-docker,johscheuer/calico-docker,projectcalico/calico-docker,quater/calico-containers,tomdee/calico-containers,projectcalico/calico-containers,tomdee/calico-containers,fasaxc/calico-docker,tomdee/calico-docker