For reference, browse to:
https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-docker-container-security?view=sql-server-ver15#encrypting-connections-to-sql-server-linux-containers

Certificate and key created with the following command:
openssl req -x509 -nodes -newkey rsa:2048 -subj '/CN=sql1' -keyout mssql.key -out mssql.pem -days 36500
