add docs to issues so people know where to head to for general questions

issue_template.md

@@ -1,3 +1,9 @@
+!!!! Important hint !!!!!
+
+> Please do not create issues for [docker](https://docs.docker.com/) or [docker-compose](https://docs.docker.com/compose/reference) related questions. Ensure you understand the tools properly and consult their documentation first. Please understand what [docker volumes](https://docs.docker.com/engine/admin/volumes/volumes/) / [docker-compose volumes](https://docs.docker.com/compose/compose-file/compose-file-v2/#specifying-byte-values)
+
+> Please be sure to have a look at our [documentation](https://github.com/EugenMayer/docker-sync/wiki) too, especially [configuration](https://github.com/EugenMayer/docker-sync/wiki/2.-Configuration) and our starting point the [boilerplate](https://github.com/EugenMayer/docker-sync-boilerplate)
+
 ### Error/Feature Requestion/Docs
 ?