@Override
    public YugabyteDBYSQLContainer withUsername(final String username) {
        this.username = username;
        return this;
    }
Setting this would create the custom user role
@param username user name
@return {@link YugabyteDBYSQLContainer} instance
modules/yugabytedb/src/main/java/org/testcontainers/containers/YugabyteDBYSQLContainer.java