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Update "install.sh" warning to be more verbose 

See https://github.com/docker/docker/issues/12395#issuecomment-99941300 for some of the context on this one.

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
This commit is contained in:
Tianon Gravi 2015-05-07 11:42:47 -06:00
parent 4f25f21a97
commit fc9ff248c1
1 changed files with 11 additions and 4 deletions
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15
hack/install.sh
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@ -49,11 +49,18 @@ do_install() {
;;
esac
if command_exists docker || command_exists lxc-docker; then
if command_exists docker; then
cat >&2 <<-'EOF'
Warning: "docker" or "lxc-docker" command appears to already exist.
Please ensure that you do not already have docker installed.
You may press Ctrl+C now to abort this process and rectify this situation.
Warning: the "docker" command appears to already exist on this system.
If you already have Docker installed, this script can cause trouble, which is
why we're displaying this warning and provide the opportunity to cancel the
installation.
If you installed the current Docker package using this script and are using it
again to update Docker, you can safely ignore this message.
You may press Ctrl+C now to abort this script.
EOF
( set -x; sleep 20 )
fi