private Map<String, String> env() {
        Map<String, String> env = new HashMap<>();
        env.put("foo", "bar");

        return env;
    }
This test need to be refactored. In fact, testing Mojos must be setup correctly at all. Blame on me that there are so
few tests ...
src/test/java/io/fabric8/maven/docker/service/RunServiceTest.java