Bootstrap 4 buttons evenly spaced in the container

Isn't there an easy way, perhaps even with flexbox, to distribute 3 buttons evenly within one div? I am new to flexbox and am still trying to figure out when and when not to use it until I am more used to it. Anyway, my html (actually JSX like this in React) :

<div className="container">
    <div>
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    </div>
    <div className="vol-ctr">
        <Button color="primary">
            <Icon name="users" />Manage Users
        </Button>
        <Button color="primary">
            <Icon name="cog" />Manage Configuration
        </Button>
        <Button color="primary">
            <Icon name="code" />Documentation
        </Button>
    </div>
</div>

      

        
        
        
      

    

And the CSS to get this at least centered:

.vol-ctr {
  text-align: center;
}