Cannot start Docker centos7

1. I connect via root ssh through putty
2. Install centos-extras
	
wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-10.noarch.rpm
rpm -ivh epel-release-7-10.noarch.rpm

3. follow the installl using repository guide:


yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

miss out enable edge and test repo's as this is optional

yum install docker-ce (installs fine)

4. Start Docker
	
systemctl start docker

Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Failed to start Docker Application Container Engine.
-- Subject: Unit docker.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.service has failed.
--
-- The result is failed.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Unit docker.service entered failed state.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service failed.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service holdoff time over, scheduling restart.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: start request repeated too quickly for docker.service
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Failed to start Docker Application Container Engine.
-- Subject: Unit docker.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.service has failed.
--
-- The result is failed.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Unit docker.service entered failed state.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service failed.
lines 2013-2035/2035 (END)
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Failed to start Docker Application Container Engine.
-- Subject: Unit docker.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.service has failed.
--
-- The result is failed.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Unit docker.service entered failed state.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service failed.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service holdoff time over, scheduling restart.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: start request repeated too quickly for docker.service
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Failed to start Docker Application Container Engine.
-- Subject: Unit docker.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.service has failed.
--
-- The result is failed.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: Unit docker.service entered failed state.
Sep 14 14:25:28 www.myperfectproperty.co.uk systemd[1]: docker.service failed.

I found out my kernel was out of date and the hosting provider will not update it boo!