MINOR - 1.3 release docker breaking docs

openmetadata-docs/content/partials/v1.3/deployment/upgrade/upgrade-prerequisites.md

@@ -147,6 +147,30 @@ Either update your YAMLs or the env var you are using under `SECRET_MANAGER`.
 Note how we also added the possibility to add `prefix` when defining the secret key ID in the external secrets managers and
 the option to tag the created resources.
 
+### Docker user
+
+In this release we updated the server [Dockerfile](https://github.com/open-metadata/OpenMetadata/blob/1.3.0/docker/development/Dockerfile#L34)
+to work with `openmetadata` as a user instead of root.
+
+If you're mapping volumes, specially when [configuring JWK](https://docs.open-metadata.org/v1.3.x/deployment/docker#add-docker-volumes-for-openmetadata-server-compose-service),
+you will need to update the owner of the directory to get it working with the new `openmetadata` user.
+
+You will need to run:
+
+```bash
+chown 1000 private_key.der
+```
+
+Otherwise, you'll see a similar error in your server logs:
+
+```
+ERROR [2024-02-08 15:29:36,792] [main] o.o.s.s.j.JWTTokenGenerator - Failed to initialize JWTTokenGenerator
+java.nio.file.AccessDeniedException: /etc/openmetadata/jwtkeys/private_key.der
+at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:90)
+at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
+...
+```
+
 ### Elasticsearch reindex from Python
 
 In 1.2.0 we introduced the Elasticsearch reindex job as part of the OpenMetadata server. In this release, we