gitlab-runner docker-autoscaler not compatible with these helm charts

It doesn't appear possible to specify a docker configuration when using the gitlab-runner docker-autoscaler and these helm charts.

The following values results in a configuration which does not contain the required [runners.docker] section. I assume this is because of some interaction with the config-template feature only populating a configuration based on the executor which is not docker.

  values:
      runners:
        protected: false
        tags: "privileged"
        runUntagged: false
        executor: docker-autoscaler
        config: |
          [[runners]]
            executor = "docker-autoscaler"
          [runners.autoscaler]
            plugin = "fleeting-plugin-aws"

            capacity_per_instance = 1
            max_use_count = 1
            max_instances = 10

            [runners.autoscaler.plugin_config] # plugin specific configuration (see plugin documentation)
              name             = "my-test-asg"               # AWS Autoscaling Group name

            [runners.autoscaler.connector_config]
              username          = "ubuntu"
              use_external_addr = true
              use_static_credentials = true
              key_path = /home/gitlab-runner/.ssh/deploy-key

            [[runners.autoscaler.policy]]
              idle_count = 5
              idle_time = "20m0s"

          [runners.docker]
            image = "alpine:latest"