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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def supports_build_in_container(config):
 """ Given a workflow config, this method provides a boolean on whether the workflow can run within a container or not. Parameters config namedtuple(Capability) Config specifying the particular build workflow Returns ------- tuple(bool, str) True, if this workflow can be built inside a container. False, along with a reason message if it cannot be. """


    def _key(c):
        return str(c.language) + str(c.dependency_manager) + str(c.application_framework)

    # This information could have beeen bundled inside the Workflow Config object. But we this way because
    # ultimately the workflow's implementation dictates whether it can run within a container or not.
    # A "workflow config" is like a primary key to identify the workflow. So we use the config as a key in the
    # map to identify which workflows can support building within a container.

    unsupported = {
        _key(DOTNET_CLIPACKAGE_CONFIG): "We do not support building .NET Core Lambda functions within a container. "
                                        "Try building without the container. Most .NET Core functions will build "
                                        "successfully.",
    }

    thiskey = _key(config)
    if thiskey in unsupported:
        return False, unsupported[thiskey]

    return True, None