fix(docker): Pin to Node.js 10.13.0

This is to prevent conflicts between ES5 deprecation headers (which can
be quite large) and the Node.js 10.14.0+ header limit of 8kb.

See #337

Author: orangejulius

Dockerfile

@@ -1,5 +1,5 @@
 # base image
-FROM pelias/baseimage
+FROM pelias/baseimage:nodejs-10.13.0
 
 # change working dir
 ENV WORKDIR /code/pelias/schema