--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)
Upstream-commit: 61b129d81802e3c988cc0e67e488b24968dd748a
Component: engine
Used the RETF rules provided by Wikipedia to fix some typographical
errors in the Markdown files of the documentation with the following
script:
https://github.com/openstack/openstack-doc-tools/tree/master/cleanup/retf
Docker-DCO-1.1-Signed-off-by: Christian Berendt <berendt@b1-systems.de> (github: berendt)
Docker-DCO-1.1-Signed-off-by: Christian Berendt <berendt@b1-systems.de> (github: SvenDowideit)
Upstream-commit: b44e13ae023816ed9d36b6dc6d74f089fc402cab
Component: engine
