added note about mysql container memory hog

[ConstBur]

I had an issue with the MySQL container occupying way too much memory (16G) when deployed as-is. Managed to fix it with adding a ulimit flag to docker run command (see docker-library/mysql#579 (comment)), for which I added a note in deployment docs.

[m5c]

Hi Constantin,

thank you very much for the note and looking into the cause. Could you also provide a bit of context info: Operating System / Version, CPU, Ram, Docker version?

Thanks!
Max

[ConstBur]

Oops, forgot about those, thank you :)

OS: Fedora 36
CPU: AMD Ryzen 7 5800H
RAM: 32GB
Docker: version 20.10.20, build 9fdeb9c

Host ulimit values:

ulimit -Hn && ulimit -Sn
1048576
1048576

Before:

After: