mattermost-push-proxy
Mattermost Push Notification Service. after starting mkdir /mnt/user/appdata/mattermost-push-proxy/config cd /mnt/user/appdata/mattermost-push-proxy/config wget https://raw.githubusercontent.com/mattermost/mattermost-push-proxy/master/config/mattermost-push-proxy.json https://developers.mattermost.com/contribute/mobile/push-notifications/service/