root@raspberrypi:~# apt-get install docker-ce
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
imagemagick-6-common libfftw3-double3 liblcms2-2 liblqr-1-0 libmagickcore-6.q16-3 libmagickwand-6.q16-3 libopenjp2-7 omvextras-common php-curl php-imagick
php-symfony-class-loader php-symfony-polyfill-apcu php7.0-curl
Use 'apt autoremove' to remove them.
Recommended packages:
aufs-tools cgroupfs-mount | cgroup-lite pigz
The following NEW packages will be installed:
docker-ce
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 0 B/10.8 MB of archives.
After this operation, 53.4 MB of additional disk space will be used.
Selecting previously unselected package docker-ce.
(Reading database ... 52076 files and directories currently installed.)
Preparing to unpack .../docker-ce_5%3a18.09.3~3-0~debian-stretch_armhf.deb ...
Unpacking docker-ce (5:18.09.3~3-0~debian-stretch) ...
Setting up docker-ce (5:18.09.3~3-0~debian-stretch) ...
update-alternatives: using /usr/bin/dockerd-ce to provide /usr/bin/dockerd (dockerd) in auto mode
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /lib/systemd/system/docker.service.
Created symlink /etc/systemd/system/sockets.target.wants/docker.socket → /lib/systemd/system/docker.socket.
Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xe" for details.
invoke-rc.d: initscript docker, action "start" failed.
● docker.service - Docker Application Container Engine
Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Thu 2019-03-21 14:43:01 EDT; 26ms ago
Docs: https://docs.docker.com
Process: 14403 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=exited, status=1/FAILURE)
Main PID: 14403 (code=exited, status=1/FAILURE)
CPU: 637ms
Mar 21 14:43:01 raspberrypi systemd[1]: docker.service: Unit entered failed state.
Mar 21 14:43:01 raspberrypi systemd[1]: docker.service: Failed with result 'exit-code'.
dpkg: error processing package docker-ce (--configure):
subprocess installed post-installation script returned error exit status 1
Processing triggers for systemd (232-25+deb9u9) ...
Errors were encountered while processing:
docker-ce
E: Sub-process /usr/bin/dpkg returned an error code (1)