docker cannot run

Hello, I’m trying Outline on a new VPS. Ubuntu 16 LTS, RAM 256 MB 5 Gb HDD, more than 4GB free

I ran

root@finland:~# curl -sS https://get.docker.com/ | sh
# Executing docker install script, commit: cfba462
+ sh -c apt-get update -qq >/dev/null
+ sh -c apt-get install -y -qq apt-transport-https ca-certificates curl >/dev/null
+ sh -c curl -fsSL "https://download.docker.com/linux/ubuntu/gpg" | apt-key add -qq - >/dev/null
+ sh -c echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu xenial stable" > /etc/apt/sources.list.d/docker.list
+ sh -c apt-get update -qq >/dev/null
+ sh -c apt-get install -y -qq --no-install-recommends docker-ce >/dev/null
E: Sub-process /usr/bin/dpkg returned an error code (1)

then

sudo wget -qO- https://raw.githubusercontent.com/Jigsaw-Code/outline-server/master/src/server_manager/install_scripts/install_server.sh | bash

which gave me

> Verifying that Docker is installed .......... OK
> Verifying that Docker daemon is running ..... OK
> Creating persistent state dir ............... OK
> Generating secret key ....................... OK
> Generating TLS certificate .................. OK
> Generating SHA-256 certificate fingerprint .. OK
> Starting Shadowbox .......................... FAILED
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.

Sorry! Something went wrong. If you can't figure this out, please copy and paste all this output into the Outline Manager screen, and send it to us, to see if we can help you.

the docker is not running so I checked the logs

root@finland:~# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: failed (Result: start-limit-hit) since Wed 2019-03-27 16:57:43 EDT; 1min 47s ago
     Docs: https://docs.docker.com
 Main PID: 5128 (code=exited, status=1/FAILURE)

Mar 27 16:57:41 finland systemd[1]: docker.service: Failed with result 'exit-code'.
Mar 27 16:57:43 finland systemd[1]: docker.service: Service hold-off time over, scheduling restart.
Mar 27 16:57:43 finland systemd[1]: Stopped Docker Application Container Engine.
Mar 27 16:57:43 finland systemd[1]: docker.service: Start request repeated too quickly.
Mar 27 16:57:43 finland systemd[1]: Failed to start Docker Application Container Engine.
Mar 27 16:57:43 finland systemd[1]: docker.service: Unit entered failed state.
Mar 27 16:57:43 finland systemd[1]: docker.service: Failed with result 'start-limit-hit'.
Mar 27 16:58:31 finland systemd[1]: docker.service: Start request repeated too quickly.
Mar 27 16:58:31 finland systemd[1]: Failed to start Docker Application Container Engine.
Mar 27 16:58:31 finland systemd[1]: docker.service: Failed with result 'start-limit-hit'.

stopped and started docker :

root@finland:~# service docker stop
root@finland:~# service docker start
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.

the output for systemctl status docker.service is

root@finland:~# systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: failed (Result: start-limit-hit) since Wed 2019-03-27 17:00:26 EDT; 40s ago
     Docs: https://docs.docker.com
  Process: 5311 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=e
 Main PID: 5311 (code=exited, status=1/FAILURE)

Mar 27 17:00:24 finland systemd[1]: Failed to start Docker Application Container Engine.
Mar 27 17:00:24 finland systemd[1]: docker.service: Unit entered failed state.
Mar 27 17:00:24 finland systemd[1]: docker.service: Failed with result 'exit-code'.
Mar 27 17:00:26 finland systemd[1]: docker.service: Service hold-off time over, scheduling restart.
Mar 27 17:00:26 finland systemd[1]: Stopped Docker Application Container Engine.
Mar 27 17:00:26 finland systemd[1]: docker.service: Start request repeated too quickly.
Mar 27 17:00:26 finland systemd[1]: Failed to start Docker Application Container Engine.
Mar 27 17:00:26 finland systemd[1]: docker.service: Unit entered failed state.
Mar 27 17:00:26 finland systemd[1]: docker.service: Failed with result 'start-limit-hit'.

and for journalctl -xe is :

root@finland:~# journalctl -xe
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.socket has begun starting up.
Mar 27 17:00:26 finland systemd[1]: Listening on Docker Socket for the API.
-- Subject: Unit docker.socket has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.socket has finished starting up.
--
-- The start-up result is done.
Mar 27 17:00:26 finland systemd[1]: docker.service: Start request repeated too quickly.
Mar 27 17:00:26 finland 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.
Mar 27 17:00:26 finland systemd[1]: docker.socket: Unit entered failed state.
Mar 27 17:00:26 finland systemd[1]: docker.service: Unit entered failed state.
Mar 27 17:00:26 finland systemd[1]: docker.service: Failed with result 'start-limit-hit'.
lines 2318-2340/2340 (END)
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.socket has begun starting up.
Mar 27 17:00:26 finland systemd[1]: Listening on Docker Socket for the API.
-- Subject: Unit docker.socket has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.socket has finished starting up.
--
-- The start-up result is done.
Mar 27 17:00:26 finland systemd[1]: docker.service: Start request repeated too quickly.
Mar 27 17:00:26 finland 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.
Mar 27 17:00:26 finland systemd[1]: docker.socket: Unit entered failed state.
Mar 27 17:00:26 finland systemd[1]: docker.service: Unit entered failed state.
Mar 27 17:00:26 finland systemd[1]: docker.service: Failed with result 'start-limit-hit'.

what could be the problem ?

[fortuna]

I think you are running wget as root, but not the script itself. Run instead:

sudo bash -c "$(wget -qO- https://raw.githubusercontent.com/Jigsaw-Code/outline-server/master/src/server_manager/install_scripts/install_server.sh)"

[catshub]

you can try

sudo service docker stop
sudo service docker start

or restart system