diff --git a/services/activity-spec/activity-spec-web/activity-spec-assembly/start.sh b/services/activity-spec/activity-spec-web/activity-spec-assembly/start.sh
new file mode 100644
index 0000000..f812475
--- /dev/null
+++ b/services/activity-spec/activity-spec-web/activity-spec-assembly/start.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [[ -z "${CASSANDRA_HOST}" ]]; then
+	echo "CASSANDRA_HOST environment variable must be set"
+	exit 1
+fi
+
+#Replace 'CASSANDRA_HOST' in configuration.yaml with value of CASSANDRA_HOST environment variable
+sed -i "s/CASSANDRA_HOST/${CASSANDRA_HOST}/" configuration.yaml
+
+java -jar -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005 "$JETTY_HOME/start.jar" -Dconfiguration.yaml=configuration.yaml
\ No newline at end of file