Looking for tutorial/information on how to install Matrix Docker container

I have a Plesk server with Docker support. I'm kinda green when it comes to Docker use. I'm asking for a little advising to help me get things going.

I see I can find several Matrix Docker containers and I'm asking if anyone has any tutorial information on how to get it to run properly. I found one that is subtitled "matrix-synapse". Once I started the run cycle I get a dialog (see below) and I have a few comments/questions:

1. I know to choose "Automatic Start after system reboot"

2. I...

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