MT#17293 Switch Dockerfile to use a sipwise-jessie image

This way we get a Debian Jessie system with Sipwise mirrors and need
not do any additional setup.

* we need lua-unit from our repos

Change-Id: I08fb9f594f94bed08b1a60d112d676475973a1a6

t/Dockerfile

@@ -1,26 +1,16 @@
 # DOCKER_NAME=lua-ngcp-kamailio-jenkins
-# TODO - switch to sipwise internal one
-FROM debian:jessie
+FROM docker.mgm.sipwise.com/sipwise-jessie:latest
 
 # Important! Update this no-op ENV variable when this Dockerfile
 # is updated with the current date. It will force refresh of all
 # of the base images and things like `apt-get update` won't be using
 # old cached versions when the Dockerfile is built.
-ENV REFRESHED_AT 2016-01-08
+ENV REFRESHED_AT 2016-01-12
 
-# mirrors behind httpredir randomly throw `Error reading from server. Remote end closed connection`
-# and we want to be independent from any external services anyway
-# TODO - the release-trunk-jessie is too dynamic yet, though required for some build/test dependencies
-RUN apt-get update && apt-get -y install apt-transport-https wget
-RUN echo "# generated by Dockerfile from lua-ngcp-kamailio-jessie at $(date)\n\
-deb https://debian.sipwise.com/debian jessie main non-free\n\
-deb https://debian.sipwise.com/debian jessie-updates main non-free\n\
-deb https://debian-security.sipwise.com/debian-security jessie-security main contrib non-free\n\
-deb https://deb.sipwise.com/autobuild/ release-trunk-jessie main\n" > /etc/apt/sources.list
-RUN wget -O /etc/apt/trusted.gpg.d/sipwise.gpg https://deb.sipwise.com/spce/sipwise.gpg
+# TODO - the release-trunk-jessie is too dynamic yet, though required for lua-unit backport
+RUN echo "deb https://deb.sipwise.com/autobuild/ release-trunk-jessie main" >>/etc/apt/sources.list
 
-RUN apt-get update
-RUN apt-get install --assume-yes lua5.1 lua-unit lua-lemock lua-logging
+RUN apt-get update && apt-get install --assume-yes lua5.1 lua-unit lua-lemock lua-logging
 
 RUN echo './t/testrunner' >>/root/.bash_history
 
@@ -34,8 +24,8 @@ WORKDIR /code/
 # % docker run --rm -i -t -v $(pwd)/..:/code:rw lua-ngcp-kamailio-jessie:latest bash
 #
 # Use the existing docker image:
-# % docker pull docker1.mgm.sipwise.com/lua-ngcp-kamailio-jessie
-# % docker run --rm -i -t -v $(pwd)/..:/code:rw docker1.mgm.sipwise.com/lua-ngcp-kamailio-jessie:latest bash
+# % docker pull docker.mgm.sipwise.com/lua-ngcp-kamailio-jessie
+# % docker run --rm -i -t -v $(pwd)/..:/code:rw docker.mgm.sipwise.com/lua-ngcp-kamailio-jessie:latest bash
 #
 # Inside docker (the command is in history, just press UP button):
 #   ./t/testrunner