Why not connect to mysql from docker?

Question

MySQL

Good afternoon!
There is a droplet, a docker is running on it, the ip-address will be indicated by host-ip.
There is a second droplet on which mysql is running, its ip address will be indicated by mysql-ip.
If I execute from the host mysql -u user -p -h {mysql-ip}, then I connect successfully.
If I do the same from the docker container, I get

ERROR 1045 (28000): Access denied for user 'user'@'host-ip' (using password: YES)

At the same time, netstat on the mysql droplet says the following:

[email protected]:/var/log/mysql# netstat -na | grep 3306
tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN
tcp        0      0 {mysql-ip}:3306      {host-ip}:58492    TIME_WAIT
tcp        0      0 {mysql-ip}:3306      {host-ip}:54170    ESTABLISHED

Accordingly, where TIME_WAITis the rejected connection.
Upd.
If you my.cnfdisable require_secure_transport = ONand recreate the user without REQUIRE SSL, then the connection is successful.
It turns out you need to dig in the direction of ssl ...