Added build-essential 
Added build-essential 

Added build-essential to list of apt-get install packages.

We need "make" to build native extensions.  Not sure how this worked before.  Maybe the base image used to include it.
kmbarry1/appengine-sidecars-docker,kmbarry1/appengine-sidecars-docker,GoogleCloudPlatform/appengine-sidecars-docker,GoogleCloudPlatform/appengine-sidecars-docker,kmbarry1/appengine-sidecars-docker,kmbarry1/appengine-sidecars-docker