docker_container returned result Name: confusing?

[b...@tanners.org]

This task

- name: start up target container

docker_container:

image: ubuntu:xenial

name: lab

hostname: testing-docker

pull: true

detach: yes

tty: yes

command: sleep infinity

state: started

published_ports:

- "8080:80"

- "8443:443"

register:

docker_results

The docker_results 

"docker_results {'failed': False, u'changed': False, u'ansible_facts': {u'docker_container': {u'Platform': u'linux', u'State': {u'Status': u'running', u'Pid': 7086, u'OOMKilled': False, u'Dead': False, u'Paused': False, u'Running': True, u'FinishedAt': u'2017-10-11T19:14:33.539397467Z', u'Restarting': False, u'Error': u'', u'StartedAt': u'2017-10-12T19:15:16.571403165Z', u'ExitCode': 0}, u'Config': {u'Tty': True, u'Cmd': [u'sleep', u'infinity'], u'Env': [u'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'], u'Domainname': u'', u'WorkingDir': u'', u'Image': u'ubuntu:xenial', u'Hostname': u'testing-docker', u'StdinOnce': False, u'Labels': {}, u'AttachStdin': False, u'User': u'', u'Volumes': None, u'ExposedPorts': {u'443/tcp': {}, u'80/tcp': {}}, u'OnBuild': None, u'AttachStderr': False, u'Entrypoint': None, u'AttachStdout': False, u'OpenStdin': False}, u'ResolvConfPath': u'/var/lib/docker/containers/6bfd77f74e0abf19a6589b38f513416c75c113a1d8ddc954577b7eadebca1265/resolv.conf', u'HostsPath': u'/var/lib/docker/containers/6bfd77f74e0abf19a6589b38f513416c75c113a1d8ddc954577b7eadebca1265/hosts', u'Args': [u'infinity'], u'Driver': u'overlay2', u'Path': u'sleep', u'HostnamePath': u'/var/lib/docker/containers/6bfd77f74e0abf19a6589b38f513416c75c113a1d8ddc954577b7eadebca1265/hostname', u'RestartCount': 0, u'Mounts': [], u'Name': u'/lab', u'Created': u'2017-10-11T18:33:35.434380798Z', u'GraphDriver': {u'Data': {u'LowerDir': u'/var/lib/docker/overlay2/7d8d66919eb5ad2f3c13740114f586b5293ecead2ebb8aebb3799347debc3f18-init/diff:/var/lib/docker/overlay2/78d7d5d36cef4ab7e18207cfbb20aabedcb35a96f3129fa6b23f109143e5e7c8/diff:/var/lib/docker/overlay2/c06f338659399ed32470652cde4524987a2f33031ead87bf46e740d4acd7a725/diff:/var/lib/docker/overlay2/d1f89d7c28a5e20e5fa9c8e13852edbf0fb26803f9433cf87b1366ad8cc7daa0/diff:/var/lib/docker/overlay2/863242d926f70df96a673c48dfed2da051883f52ebf1951379010a1fb8728666/diff:/var/lib/docker/overlay2/e9d37e4acc5ed8bfff2ade2b2e16752a7bf3dccf0533466b1427c48831173f13/diff', u'WorkDir': u'/var/lib/docker/overlay2/7d8d66919eb5ad2f3c13740114f586b5293ecead2ebb8aebb3799347debc3f18/work', u'MergedDir': u'/var/lib/docker/overlay2/7d8d66919eb5ad2f3c13740114f586b5293ecead2ebb8aebb3799347debc3f18/merged', u'UpperDir': u'/var/lib/docker/overlay2/7d8d66919eb5ad2f3c13740114f586b5293ecead2ebb8aebb3799347debc3f18/diff'}, u'Name': u'overlay2'}, u'ExecIDs': None, u'ProcessLabel': u'', u'NetworkSettings': {u'SecondaryIPAddresses': None, u'SecondaryIPv6Addresses': None, u'Bridge': u'', u'GlobalIPv6PrefixLen': 0, u'LinkLocalIPv6Address': u'', u'MacAddress': u'02:42:ac:11:00:02', u'IPAddress': u'172.17.0.2', u'HairpinMode': False, u'IPPrefixLen': 16, u'GlobalIPv6Address': u'', u'Gateway': u'172.17.0.1', u'LinkLocalIPv6PrefixLen': 0, u'EndpointID': u'b7fa5feeb8b9c0c77d49d470661e47dbaa1faf68b2b0d55a13786d90edde1e71', u'SandboxKey': u'/var/run/docker/netns/7d41f83b4bfe', u'SandboxID': u'7d41f83b4bfe13f0e0534c3ace5a58e71ab2a7c2615bd6394d6ebb7935756ad4', u'IPv6Gateway': u'', u'Networks': {u'bridge': {u'NetworkID': u'03d6900e0ffea5652ebc2f209be380aad2e554239bb9aac044b5b7fdf698595b', u'MacAddress': u'02:42:ac:11:00:02', u'GlobalIPv6PrefixLen': 0, u'Links': None, u'GlobalIPv6Address': u'', u'IPAddress': u'172.17.0.2', u'DriverOpts': None, u'IPPrefixLen': 16, u'EndpointID': u'b7fa5feeb8b9c0c77d49d470661e47dbaa1faf68b2b0d55a13786d90edde1e71', u'Aliases': None, u'IPv6Gateway': u'', u'Gateway': u'172.17.0.1', u'IPAMConfig': None}}, u'Ports': {u'443/tcp': [{u'HostPort': u'8443', u'HostIp': u'0.0.0.0'}], u'80/tcp': [{u'HostPort': u'8080', u'HostIp': u'0.0.0.0'}]}}, u'AppArmorProfile': u'docker-default', u'Image': u'sha256:747cb2d60bbecbda48aff14a8be5c8b913ca69318a6067e57c697f8a78dda06e', u'LogPath': u'/var/lib/docker/containers/6bfd77f74e0abf19a6589b38f513416c75c113a1d8ddc954577b7eadebca1265/6bfd77f74e0abf19a6589b38f513416c75c113a1d8ddc954577b7eadebca1265-json.log', u'HostConfig': {u'CpuPeriod': 0, u'MemorySwappiness': None, u'AutoRemove': False, u'Cgroup': u'', u'PortBindings': {u'443/tcp': [{u'HostPort': u'8443', u'HostIp': u'0.0.0.0'}], u'80/tcp': [{u'HostPort': u'8080', u'HostIp': u'0.0.0.0'}]}, u'BlkioDeviceReadIOps': None, u'CpuQuota': 0, u'UsernsMode': u'', u'ConsoleSize': [0, 0], u'Dns': [], u'Memory': 0, u'PidsLimit': 0, u'DnsSearch': [], u'Privileged': False, u'IOMaximumIOps': 0, u'NanoCpus': 0, u'CpusetCpus': u'', u'PidMode': u'', u'DiskQuota': 0, u'CgroupParent': u'', u'BlkioWeight': 0, u'MemorySwap': 0, u'RestartPolicy': {u'MaximumRetryCount': 0, u'Name': u''}, u'OomScoreAdj': 0, u'BlkioDeviceReadBps': None, u'VolumeDriver': u'', u'ReadonlyRootfs': False, u'CpuShares': 0, u'PublishAllPorts': False, u'MemoryReservation': 0, u'BlkioWeightDevice': None, u'CpuPercent': 0, u'NetworkMode': u'default', u'BlkioDeviceWriteBps': None, u'Isolation': u'', u'GroupAdd': None, u'CpuRealtimeRuntime': 0, u'Devices': None, u'BlkioDeviceWriteIOps': None, u'VolumesFrom': None, u'Binds': [], u'CpusetMems': u'', u'KernelMemory': 0, u'UTSMode': u'', u'ExtraHosts': None, u'Runtime': u'runc', u'Ulimits': None, u'CapDrop': None, u'DnsOptions': [], u'Links': None, u'ShmSize': 67108864, u'CpuRealtimePeriod': 0, u'IpcMode': u'shareable', u'ContainerIDFile': u'', u'SecurityOpt': None, u'CapAdd': None, u'CpuCount': 0, u'DeviceCgroupRules': None, u'OomKillDisable': False, u'LogConfig': {u'Type': u'json-file', u'Config': {}}, u'IOMaximumBandwidth': 0}, u'Id': u'6bfd77f74e0abf19a6589b38f513416c75c113a1d8ddc954577b7eadebca1265', u'MountLabel': u''}}}"

I expected the Name: to be lab, why is called "/lab" (note the forward slash).

Thanks.

[Matt Martz]

That is how names are represented internally in Docker.  See https://github.com/moby/moby/issues/6705 for some additional information.  It just so happens the CLI for docker actually tends to strip the leading slash.  But the real name includes that slash.

Effectively the docker module is returning the same info as `docker inspect`

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Matt Martz
@sivel
sivel.net