[FEAT] make SSL happen automatically from Let's Encrypt

[keldarm]

Is this a new feature request?

• I have searched the existing issues

Wanted change

add SSL when invoked from a docker run switch

Reason for change

some video sites require SSL

Proposed code change

No response

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[aptalca]

linuxserver/docker-firefox#82 (comment)

[strunzoz]

not everyone can run reverse proxy as ports 80 and 443 are unavailable

[Roxedus]

Those are not prerequisites for a reverse proxy