I may not be able to answer some of the more security-oriented questions, but one of the things I recommend is using a proxy to "hide" your home IP address. IP addresses can contain a lot of information including location data, so it's a good idea to make things harder for attackers to figure out where you live. I'm pretty sure you can do this with a basic VPS setup, but I know for sure you can do this with Cloudflare (as I have it enabled on my server).
As for getting reverse proxies set up from your Docker containers to the outside world using Apache, I can help. I use (rootless) Podman on my Raspberry Pi, meaning when I expose ports from my containers I have to choose port numbers greater than 8000. Once I have a port (let's say 8080), and a subdomain (I'll use subdomain.example.com), I just need to create a file in /etc/apache2/sites-available/ which I'll call site.example.com.conf. The content usually looks something like this:
ProxyPreserveHost On
ProxyRequests Off
ServerName subdomain.example.com
ServerAlias subdomain.example.com
ProxyPass / http://localhost:8080/
ProxyPassReverse / http://localhost:8080/
Then you just need to enter the commands sudo a2ensite subdomain.example.com and sudo systemctl reload apache2 and you should be able to access your container as a subdomain. You should just need to forward port 80 (and 443 if you want to set up Let's Encrypt and HTTPS) on your router.
Hope this helps!
Or worse, "Why should I switch to Firefox? Everybody's complaining about the performance of Firefox compared to Chrome, but Chrome just works for me."
Blissfully unaware of the kind of power you're giving Google over the Internet by using their browser. I once had an experience where someone tried to use this to push me back to using Chrome.