Fix permissions on external mounts (#144)

Co-authored-by: luhahn <lucas.hahn@novum-rgi.de>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/144
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: luhahn <luhahn@noreply.gitea.io>
Co-committed-by: luhahn <luhahn@noreply.gitea.io>

templates/gitea/init.yaml

@@ -16,6 +16,7 @@ stringData:
     # END: initPreScript
     {{- end }}
 
+    chown 1000:1000 /data
     mkdir -p /data/git/.ssh
     chmod -R 700 /data/git/.ssh
     mkdir -p /data/gitea/conf