def add_dataset(self, key, values, color=None):
        d = dict(key=key, values=values)
        if color:
            d['color'] = color
        self.data.append(d)
Resolve relative and symlinked path, providing mappings for docker container.
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/reports/graph_models.py/MultiBarChart.add_dataset--crossover with--dataset/ETHPy150Open chapmanb/bcbio-nextgen-vm/bcbiovm/docker/mounts.py/update_config