minor refactor

integration-test/Dockerfile

@@ -0,0 +1,11 @@
+FROM ubuntu:trusty
+
+RUN apt-get update && apt-get install -yq curl && apt-get clean
+
+WORKDIR /app
+
+ADD test_file_sync.sh /app/test_file_sync.sh
+
+VOLUME [ "/data1", "/data2" ]
+
+CMD ["bash", "test_file_sync.sh"]

integration-test/test_file_sync.sh

@@ -0,0 +1,9 @@
+TEST_TEXT="test string"
+
+echo "${TEST_TEXT}" > /data1/testfile
+
+# shellcheck disable=SC2034
+for i in $(seq 1 30); do
+  [ "${TEST_TEXT}" == "$(cat /data2/testfile)" ] && s=0 && break || s=$? && sleep 2
+done
+(exit $s)