public JdbcDatabaseContainer newInstance() {
        log.warn(
            "No explicit version tag was provided in JDBC URL and this class ({}) does not " +
            "override newInstance() to set a default tag. `latest` will be used but results may " +
            "be unreliable!",
            this.getClass().getCanonicalName()
        );
        return this.newInstance("latest");
    }
Instantiate a new {@link JdbcDatabaseContainer} without any specified image tag. Subclasses <i>should</i>
override this method if possible, to provide a default tag that is more stable than <code>latest</code>`.

@return Instance of {@link JdbcDatabaseContainer}
modules/jdbc/src/main/java/org/testcontainers/containers/JdbcDatabaseContainerProvider.java