Add proxy to startup script

5 jobs for master in 1 minute and 8 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #20171
build:spark-jupyter-notebook

00:00:19

passed #20172
build:spark-master

00:00:17

passed #20173
build:spark-worker

00:00:17

 
  Test
passed #20174
test:json

00:00:16

 
  Push
passed #20175
push:hub

00:00:32