Fix ssh permission denied(publickey) at reinstalling the chart without deleting pvc (#25)

Fix ssh permission denied(publickey) at reinstalling the chart without deleting pvc

Co-authored-by: Lucas Hahn <lucas.hahn@novum-rgi.de>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/25
Reviewed-by: techknowlogick <techknowlogick@gitea.io>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>

templates/gitea/statefulset.yaml

@@ -25,6 +25,8 @@ spec:
           env:
             - name: SCRIPT
               value: &script |-
+                mkdir -p /data/git/.ssh
+                chmod 700 /data/git/.ssh
                 mkdir -p /data/gitea/conf
                 cp /etc/gitea/conf/app.ini /data/gitea/conf/app.ini
                 chmod a+rwx /data/gitea/conf/app.ini