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docker-swag
Nginx webserver and reverse proxy with php support and a built-in Certbot (Let's Encrypt) client. It also contains fail2ban for intrusion prevention.
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Nginx Proxy Manager
Docker container for managing Nginx proxy hosts with a simple, powerful interface
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
https://docs.linuxserver.io/general/swag is a commonly used container for a reverse proxy. (also available in the community apps) I personally have a Nginx with certbot configured manually, as I transferred a non docker setup over to UnRAID.
I would highly recommend NginxProxyManager that you run your nextcloud behind. It is really easy to set up and manage and it will automatically manage your certificates AND it will add another layer between the internet and nextcloud to make it more secure.