Add drone.yml and fix tests to be compatable with docker pipeline (#1)

init drone file
allow testing on custom host/port

Co-authored-by: James <inbox.dev@jhodges.co.uk>
Reviewed-on: #1
Co-Authored-By: James <jhodges@noreply@git.jhodges.co.uk>
Co-Committed-By: James <jhodges@noreply@git.jhodges.co.uk>

tests/server/start_server.sh

@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-
-npm install
-
-if [ -z ${TRAVIS_JOB_ID} ]; then
-    # not running under travis, stay in foreground until stopped
-    node server.js
-else
-    cd tests/server
-
-    # running under travis, daemonize
-    (node server.js &) || /bin/true
-fi