Support customising tideways hostname

Author: kierenevans

tideways/Dockerfile

@@ -13,3 +13,4 @@ RUN echo 'deb http://s3-eu-west-1.amazonaws.com/qafoo-profiler/packages debian m
  && rm -rf /var/lib/apt/lists/*
 
 COPY ./etc/ /etc/
+COPY ./usr/ /usr/

tideways/etc/confd/templates/supervisor/tideways_daemon.conf.tmpl

@@ -1,5 +1,5 @@
 [program:tideways_daemon]
-command = /usr/bin/tideways-daemon --hostname=tideways-daemon --address=0.0.0.0:9135 --udp=0.0.0.0:9136
+command = /usr/bin/tideways-daemon --hostname="{{ getenv "TIDEWAYS_HOSTNAME" }}" --address=0.0.0.0:9135 --udp=0.0.0.0:9136 --env="{{ getenv "TIDEWAYS_ENVIRONMENT" }}"
 stdout_logfile=/dev/stdout
 stdout_logfile_maxbytes=0
 stderr_logfile=/dev/stderr

tideways/usr/local/share/env/40-stack

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+export TIDEWAYS_HOSTNAME=${TIDEWAYS_HOSTNAME:-tideways-daemon}
+export TIDEWAYS_ENVIRONMENT=${TIDEWAYS_ENVIRONMENT:-production}