can sync file!

integration test works

integrationtest/Dockerfile

@@ -4,6 +4,8 @@ RUN apt-get update && apt-get install -yq curl && apt-get clean
 
 WORKDIR /app
 
-ADD test.sh /app/test.sh
+ADD test_file_sync.sh /app/test_file_sync.sh
 
-CMD ["bash", "test.sh"]
+VOLUME [ "/data1", "/data2" ]
+
+CMD ["bash", "test_file_sync.sh"]

integrationtest/test.sh

@@ -1,12 +0,0 @@
-sleep 5
-echo "test string" > /sync1/testfile
-echo /sync1/testfile
-echo /sync2/testfile
-
-#if curl web | grep -q '<b>Visits:</b> '; then
-#  echo "Tests passed!"
-#  exit 0
-#else
-#  echo "Tests failed!"
-#  exit 1
-#fi

integrationtest/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)