Create a crude test runner

Per #17.

deploy/run_tests.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+if [ "$(docker container ps |grep -c rs_api)" -eq "0" ]; then
+    echo "The API is not running in Docker, so cannot run tests"
+    exit 1
+fi
+
+cd tests || exit
+
+for f in *.sh; do
+  bash "$f" -H
+done
+
+cd ..