a2b529ead2
--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)
1 KiB
% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014
NAME
docker-login - Register or log in to a Docker registry server, if no server is specified "https://index.docker.io/v1/" is the default.
SYNOPSIS
docker login [-e|--email[=EMAIL]] [--help] [-p|--password[=PASSWORD]] [-u|--username[=USERNAME]] [SERVER]
DESCRIPTION
Register or Login to a docker registry server, if no server is specified "https://index.docker.io/v1/" is the default. If you want to login to a private registry you can specify this by adding the server name.
OPTIONS
-e, --email="" Email
--help Print usage statement
-p, --password="" Password
-u, --username="" Username
EXAMPLES
Login to a local registry
# docker login localhost:8080
HISTORY
April 2014, Originally compiled by William Henry (whenry at redhat dot com) based on docker.com source material and internal work. June 2014, updated by Sven Dowideit SvenDowideit@home.org.au