MySQL container fails to start with "unknown variable 'innodb_file_format=barracuda'"

[philipnewcomer]

Mariadb 10.3 has removed the innodb_file_format=barracuda configuration variable. New Pilothouse users downloading the latest Mariadb container (10.3) would get this error, while existing users still using Mariadb 10.2 would not be affected.

Should be fixed by removing innodb_file_format=barracuda from the configuration file, since Barracuda is now the default.