diff --git a/services/activity-spec/activity-spec-init/Dockerfile b/services/activity-spec/activity-spec-init/Dockerfile
index 25fcd38..0936146 100644
--- a/services/activity-spec/activity-spec-init/Dockerfile
+++ b/services/activity-spec/activity-spec-init/Dockerfile
@@ -1,10 +1,12 @@
-FROM cassandra:2.1.9
+FROM alpine:3.7
 
-ENV CASSANDRA_PORT=9042
+RUN apk add --no-cache 'python<3' py-pip && pip install cqlsh==4.0.1
+
+ENV CASSANDRA_PORT=9160
 
 COPY create_activityspec_db.cql .
 COPY start.sh .
 
 RUN chmod 744 start.sh
 
-ENTRYPOINT ["/start.sh"]
\ No newline at end of file
+ENTRYPOINT ["./start.sh"]
\ No newline at end of file
diff --git a/services/activity-spec/activity-spec-init/start.sh b/services/activity-spec/activity-spec-init/start.sh
index 5242bd5..defc8ef 100644
--- a/services/activity-spec/activity-spec-init/start.sh
+++ b/services/activity-spec/activity-spec-init/start.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 if [[ -z "${CASSANDRA_HOST}" ]]; then
 	echo "CASSANDRA_HOST environment variable must be set"
diff --git a/services/activity-spec/activity-spec-web/Dockerfile b/services/activity-spec/activity-spec-web/Dockerfile
index 3ef0ef3..fe7e20b 100644
--- a/services/activity-spec/activity-spec-web/Dockerfile
+++ b/services/activity-spec/activity-spec-web/Dockerfile
@@ -1,4 +1,4 @@
-FROM jetty:alpine
+FROM jetty:9.4.9-alpine
 
 EXPOSE 8080
 EXPOSE 8443