digraph pipeline {
        developer [shape="circle" label="developer"];
        commit [shape="ellipse" label="Commit stage"];
        acceptance [shape="ellipse" label="Acceptance stage"];
        testenv [shape="octagon" label="A test environment"];
        deployprod [shape="ellipse" label="Deploy to production"];
        production [shape="doubleoctagon" label="Production environment"];

        developer -> commit;
        
        commit -> acceptance;
        acceptance -> testenv [style=dotted];

        acceptance -> deployprod;
        deployprod -> production;
}