Bug 1250904 - Add an hgrc for 'worker' user in testing/docker/desktop-test, r=armenzg

This creates some defaults, enables common built-in extensions and sets up
Ubuntu's CA file for checking host certificates.

MozReview-Commit-ID: DzBlVUs9R8I

--HG--
extra : rebase_source : 81cb5b935910091a4d6632daac439e786c6c410f

testing/docker/desktop-test/Dockerfile

@@ -4,6 +4,7 @@ MAINTAINER    Jonas Finnemann Jensen <jopsen@gmail.com>
 # Add utilities and configuration
 COPY           dot-files/config              /home/worker/.config
 COPY           dot-files/pulse               /home/worker/.pulse
+COPY           dot-files/hgrc                /home/worker/.hgrc
 COPY           bin                           /home/worker/bin
 RUN            chmod +x bin/*
 # TODO: remove this when buildbot is gone

testing/docker/desktop-test/dot-files/hgrc

@@ -0,0 +1,12 @@
+[diff]
+showfunc = 1
+unified = 8
+
+[extensions]
+color =
+pager =
+progress =
+rebase =
+
+[web]
+cacerts = /etc/ssl/certs/ca-certificates.crt