Finally got it working.  All I did was delete the whole docker container, then recreated it with exactly the same values.  
 
I reached the following page:
 

Welcome to our server

The website is currently being setup under this address.

For help and support, please contact: [email protected]

 

I get to access the page above by typing https://jxxxx1.duckdns.org.  By typing http://jxxxx1.duckdns.org, I don't reach that page.  Why is this the case?

If you look at the nginx config file called default you may find the http block is hashed out.

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@CHBMB, so is it normal to just not to access http?  Just access https all the time?

 

 

[mention=6219]CHBMB[/mention], so is it normal to just not to access http?  Just access https all the time?
 
 

Well, if it were up to me, I would only every access anything on WAN via HTTPS.

Http offers no advantage that I perceive.

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@CHBMB, thanks for the clarification.