docker_container: fix idempotency problem with empty published_ports list (#979)

* Distinguish between [] and None.

* Add changelog fragment.

* Fix typo.
This commit is contained in:
Felix Fontein 2020-09-28 20:40:57 +02:00 committed by GitHub
parent c173d4d5bc
commit 4e1f6683d9
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3 changed files with 16 additions and 1 deletions

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@ -2400,7 +2400,7 @@ class Container(DockerBaseClass):
return shlex.split(self.parameters.entrypoint)
def _get_expected_ports(self):
if not self.parameters.published_ports:
if self.parameters.published_ports is None:
return None
expected_bound_ports = {}
for container_port, config in self.parameters.published_ports.items():