Prevent change protocol (from HTTP to HTTPS) when redirecting to log in happens

I expect that whenever my NOP requires to redirected to log in page keeps the current protocol. For example I enter the  https://MyStore.com/admin URL in my browser I expect it to redirect me to log in page using https://MyStore.com/login?ReturnUrl=%2Fadmin but it changes my protocol to HTTP instead of keep using of HTTPS.

NOP Version: 4.2
Hosted using docker

Settings:
securitysettings.forcesslforallpages: True

That seems odd.  Check your admin page for Stores.  What's in "Store URL" field?

https://MyStore.com/

See if this helps
https://www.nopcommerce.com/en/boards/topic/84534/nop43-does-not-redirect-all-pages-to-https