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Relax checking of userns_mode to allow supplying e.g. keep-id as config #3230

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Relax checking of userns_mode to allow supplying e.g. keep-id as config #3230

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9 changes: 7 additions & 2 deletions docker/types/containers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -544,8 +544,13 @@ def __init__(self, version, binds=None, port_bindings=None,
if version_lt(version, '1.23'):
raise host_config_version_error('userns_mode', '1.23')

if userns_mode != "host":
raise host_config_value_error("userns_mode", userns_mode)
# Do not check that userns_mode has a specific value, i.e. 'host'
# since more complex values might be supported by the daemon exposing
# the docker api, e.g. podman also supports 'keep-id'

if not isinstance(userns_mode, str):
raise host_config_type_error('userns_mode', userns_mode, 'string')

self['UsernsMode'] = userns_mode

if uts_mode:
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