docker / nerdctl inconsistent value type for Labels returned by container list --format json #2987
Description
Description
docker returns Labels as a string with coma separated key=value, while nerdctl return them as an object.
I appreciate that nerdctl wants to mimic docker behavior as much as possible and I am usually on board with that, but in that case, I think Docker is just wrong and nerdctl should keep the current behavior, even at the cost of deviating.
I am opening the issue so that we can have a discussion on this and decide on a resolution.
My vote obviously is to just document it and not change the current behavior.
Thoughts?
Steps to reproduce the issue
- docker container list --all --format json
- sudo ./nerdctl container list --all --format json
Describe the results you received and expected
Docker returns:
{
"Labels": "org.opencontainers.image.version=f40ece5,org.opencontainers.image.documentation=https://github.com/dubo-dubon-duponey/docker-dns/blob/master/README.md,org.opencontainers.image.ref.name=bookworm-2024-03-01,org.opencontainers.image.revision=f40ece567f4d6a0b1c8249f32ab0a82f5594efca,org.opencontainers.image.created=2024-03-27T12:15:26-0700,org.opencontainers.image.licenses=The MIT License (MIT),org.opencontainers.image.source=https://github.com/dubo-dubon-duponey/docker-dns/tree/master,org.opencontainers.image.vendor=dubodubonduponey,org.hadron.core.version=v0.1-dev,org.hadron.plan.tag=2024/04/02-17:19:16-5F6228B8-4152-4C7B-8D44-4E9293B1C59D,org.hadron.plan.sha=3c8d9485ffe7f0c91b837942b98be71d3d65a632029ae579143387eda499a137,org.opencontainers.image.authors=Dubo Dubon Duponey <dubo-dubon-duponey@farcloser.world>,org.opencontainers.image.description=So image. Much DBDBDP. Such description.,org.opencontainers.image.title=A DBDBDP image,org.opencontainers.image.url=https://github.com/dubo-dubon-duponey/docker-dns,org.hadron.plan.description=some_plan_descriptor,org.hadron.plan.name=plan_name"
}
Nerdctl returns:
"Labels": {
"containerd.io/restart.loguri": "binary:///home/apo/nerdctl-patch?_NERDCTL_INTERNAL_LOGGING=%2Fvar%2Flib%2Fnerdctl%2F1935db59",
"containerd.io/restart.policy": "always",
"containerd.io/restart.status": "running",
"io.containerd.image.config.stop-signal": "SIGTERM",
"nerdctl/extraHosts": "null",
"nerdctl/hostname": "airplay-oliphant.local",
"nerdctl/ipc": "{\"mode\":\"private\"}",
"nerdctl/log-uri": "binary:///home/apo/nerdctl-patch?_NERDCTL_INTERNAL_LOGGING=%2Fvar%2Flib%2Fnerdctl%2F1935db59",
"nerdctl/mounts": "[{\"Type\":\"tmpfs\",\"Source\":\"tmpfs\",\"Destination\":\"/magnetar/cache\",\"Mode\":\"nodev,rw,uid=2000,gid=65534,noexec,nosuid,size=1000000000\",\"RW\":false,\"Propagation\":\"\"},{\"Type\":\"tmpfs\",\"Source\":\"tmpfs\",\"Destination\":\"/magnetar/runtime\",\"Mode\":\"nodev,rw,uid=2000,gid=65534,noexec,nosuid,size=1000000\",\"RW\":false,\"Propagation\":\"\"},{\"Type\":\"tmpfs\",\"Source\":\"tmpfs\",\"Destination\":\"/magnetar/state\",\"Mode\":\"nodev,rw,uid=2000,gid=65534,noexec,nosuid,size=1000000\",\"RW\":false,\"Propagation\":\"\"},{\"Type\":\"tmpfs\",\"Source\":\"tmpfs\",\"Destination\":\"/magnetar/state/avahi-daemon\",\"Mode\":\"nodev,rw,uid=101,gid=102,noexec,nosuid,size=1000000\",\"RW\":false,\"Propagation\":\"\"}]",
"nerdctl/name": "airplay",
"nerdctl/namespace": "default",
"nerdctl/networks": "[\"hadron-mac-v6\"]",
"nerdctl/platform": "linux/arm64/v8",
"nerdctl/state-dir": "/var/lib/nerdctl/1935db59/containers/default/4b9798381227e513e01d08eb646ab336c6eb967e1a22f484b51e437d6a5c3cf0",
"org.hadron.core.version": "v0.1-dev",
"org.hadron.plan.description": "some_plan_descriptor",
"org.hadron.plan.name": "plan_name",
"org.hadron.plan.sha": "4c4179622ab1571d55d5eed32c5ac9bde46756197ba47d597f7f61e5d36ad742",
"org.hadron.plan.tag": "2024/05/10-23:53:16-010DA0DA-FDA3-4C2A-A67D-35CB9FCB2F88"
}
What version of nerdctl are you using?
1.7.6
Are you using a variant of nerdctl? (e.g., Rancher Desktop)
None
Host information
No response