Adds more documentation for labels and adds the label instruction to the
man-pages.
Also included is a document called "Labels - custom meta-data in Docker"
in the user-guide, this is still a work-in-progress I started to describe
the "namespaces" conventions, an example on storing structured data.
I ran a bit "out of steam" (writers block?) on that document, but kept
it in (for now), in case it still ends up useful.
The Remote API documentation changes will need to be moved to the
docker_remote_api_v1.18.md document when rebasing the whole PR.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Signed-off-by: Darren Shepherd <darren@rancher.com>
--help and help are successful commands so output should not go to error.
QE teams have requested this change, also users doing docker help | less
or docker run --help | less would expect this to work.
Usage statement should only be printed when the user asks for it.
Errors should print error message and then suggest the docker COMMAND --help
command to see usage information.
The current behaviour causes the user to have to search for the error message
and sometimes scrolls right off the screen. For example a error on a
"docker run" command is very difficult to diagnose.
Finally erros should always exit with a non 0 exit code, if the user
makes a CLI error.
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
--help and help are successful commands so output should not go to error.
QE teams have requested this change, also users doing docker help | less
or docker run --help | less would expect this to work.
Usage statement should only be printed when the user asks for it.
Errors should print error message and then suggest the docker COMMAND --help
command to see usage information.
The current behaviour causes the user to have to search for the error message
and sometimes scrolls right off the screen. For example a error on a
"docker run" command is very difficult to diagnose.
Finally erros should always exit with a non 0 exit code, if the user
makes a CLI error.
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
