"ignoring file '50unattended-upgrades.wcf-dist' in directory '/etc/apt/apt.conmf.d/' as it has an invalid filename extension

Sounds like true.
Here’s what I got after typing in terminal

wget -qO- https://get.docker.com/ | sh

from discourse/docs/INSTALL-cloud.md at main · discourse/discourse · GitHub

modprobe: ERROR: ../libkmod/libkmod.c:514 lookup_builtin_file() could not open b                                                                                        uiltin file '/lib/modules/2.6.32-042stab117.16/modules.builtin.bin'
modprobe: FATAL: Module aufs not found in directory /lib/modules/2.6.32-042stab1                                                                                        17.16
Warning: current kernel is not supported by the linux-image-extra-virtual
 package.  We have no AUFS support.  Consider installing the packages
 linux-image-virtual kernel and linux-image-extra-virtual for AUFS support.
+ sleep 10
+ sh -c sleep 3; apt-get update
Get:1 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:4 http://archive.canonical.com/ubuntu xenial/partner amd64 Packages [2664 B]
Get:5 http://archive.canonical.com/ubuntu xenial/partner Translation-en [1424 B]
Get:6 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Get:7 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages [213                                                                                         kB]
Get:8 http://security.ubuntu.com/ubuntu xenial-security/main Translation-en [89.                                                                                        2 kB]
Get:9 http://security.ubuntu.com/ubuntu xenial-security/restricted amd64 Package                                                                                        s [6828 B]
Get:10 http://security.ubuntu.com/ubuntu xenial-security/restricted Translation-                                                                                        en [2272 B]
Get:11 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages                                                                                         [74.6 kB]
Get:12 http://security.ubuntu.com/ubuntu xenial-security/universe Translation-en                                                                                         [42.1 kB]
Get:13 http://security.ubuntu.com/ubuntu xenial-security/multiverse amd64 Packag                                                                                        es [2748 B]
Get:14 http://security.ubuntu.com/ubuntu xenial-security/multiverse Translation-                                                                                        en [1232 B]
Get:15 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages [1201 kB]
Get:16 http://archive.ubuntu.com/ubuntu xenial/main Translation-en [568 kB]
Get:17 http://archive.ubuntu.com/ubuntu xenial/restricted amd64 Packages [8344 B                                                                                        ]
Get:18 http://archive.ubuntu.com/ubuntu xenial/restricted Translation-en [2908 B                                                                                        ]
Get:19 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages [7532 kB]
Get:20 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en [4354 kB]
Get:21 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages [472                                                                                         kB]
Get:22 http://archive.ubuntu.com/ubuntu xenial-updates/main Translation-en [186                                                                                         kB]
Get:23 http://archive.ubuntu.com/ubuntu xenial-updates/restricted amd64 Packages                                                                                         [7176 B]
Get:24 http://archive.ubuntu.com/ubuntu xenial-updates/restricted Translation-en                                                                                         [2396 B]
Get:25 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages [                                                                                        397 kB]
Get:26 http://archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [                                                                                        149 kB]
Fetched 15.8 MB in 4s (3888 kB/s)
Reading package lists... Done
+ sh -c sleep 3; apt-get install -y -q apt-transport-https ca-certificates
Reading package lists...
Building dependency tree...
ca-certificates is already the newest version (20160104ubuntu1).
The following additional packages will be installed:
  libcurl3-gnutls librtmp1
The following NEW packages will be installed:
  apt-transport-https libcurl3-gnutls librtmp1
0 upgraded, 3 newly installed, 0 to remove and 72 not upgraded.
Need to get 264 kB of archives.
After this operation, 902 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial/main amd64 librtmp1 amd64 2.4+2015                                                                                        1223.gitfa8646d-1build1 [53.9 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libcurl3-gnutls                                                                                         amd64 7.47.0-1ubuntu2.2 [184 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 apt-transport-h                                                                                        ttps amd64 1.2.19 [26.0 kB]
Fetched 264 kB in 0s (1922 kB/s)
Selecting previously unselected package librtmp1:amd64.
(Reading database ... 26041 files and directories currently installed.)
Preparing to unpack .../librtmp1_2.4+20151223.gitfa8646d-1build1_amd64.deb ...
Unpacking librtmp1:amd64 (2.4+20151223.gitfa8646d-1build1) ...
Selecting previously unselected package libcurl3-gnutls:amd64.
Preparing to unpack .../libcurl3-gnutls_7.47.0-1ubuntu2.2_amd64.deb ...
Unpacking libcurl3-gnutls:amd64 (7.47.0-1ubuntu2.2) ...
Selecting previously unselected package apt-transport-https.
Preparing to unpack .../apt-transport-https_1.2.19_amd64.deb ...
Unpacking apt-transport-https (1.2.19) ...
Processing triggers for libc-bin (2.23-0ubuntu4) ...
Setting up librtmp1:amd64 (2.4+20151223.gitfa8646d-1build1) ...
Setting up libcurl3-gnutls:amd64 (7.47.0-1ubuntu2.2) ...
Setting up apt-transport-https (1.2.19) ...
Processing triggers for libc-bin (2.23-0ubuntu4) ...
+ sh -c sleep 3; apt-get install -y -q dirmngr
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
  libassuan0 libksba8 libnpth0
The following NEW packages will be installed:
  dirmngr libassuan0 libksba8 libnpth0
0 upgraded, 4 newly installed, 0 to remove and 72 not upgraded.
Need to get 368 kB of archives.
After this operation, 1041 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial/main amd64 libassuan0 amd64 2.4.2-                                                                                        2 [34.6 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libksba8 amd64                                                                                         1.3.3-1ubuntu0.16.04.1 [90.2 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial/main amd64 libnpth0 amd64 1.2-3 [7                                                                                        998 B]
Get:4 http://archive.ubuntu.com/ubuntu xenial/main amd64 dirmngr amd64 2.1.11-6u                                                                                        buntu2 [235 kB]
Fetched 368 kB in 0s (2050 kB/s)
Selecting previously unselected package libassuan0:amd64.
(Reading database ... 26059 files and directories currently installed.)
Preparing to unpack .../libassuan0_2.4.2-2_amd64.deb ...
Unpacking libassuan0:amd64 (2.4.2-2) ...
Selecting previously unselected package libksba8:amd64.
Preparing to unpack .../libksba8_1.3.3-1ubuntu0.16.04.1_amd64.deb ...
Unpacking libksba8:amd64 (1.3.3-1ubuntu0.16.04.1) ...
Selecting previously unselected package libnpth0:amd64.
Preparing to unpack .../libnpth0_1.2-3_amd64.deb ...
Unpacking libnpth0:amd64 (1.2-3) ...
Selecting previously unselected package dirmngr.
Preparing to unpack .../dirmngr_2.1.11-6ubuntu2_amd64.deb ...
Unpacking dirmngr (2.1.11-6ubuntu2) ...
Processing triggers for libc-bin (2.23-0ubuntu4) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up libassuan0:amd64 (2.4.2-2) ...
Setting up libksba8:amd64 (1.3.3-1ubuntu0.16.04.1) ...
Setting up libnpth0:amd64 (1.2-3) ...
Setting up dirmngr (2.1.11-6ubuntu2) ...
Processing triggers for libc-bin (2.23-0ubuntu4) ...
+ sh -c apt-key adv --keyserver hkp://ha.pool.sks-keyservers.net:80 --recv-keys                                                                                         58118E89F3A912897C070ADBF76221572C52609D
Executing: /tmp/tmp.H5xJU9gvQm/gpg.1.sh --keyserver
hkp://ha.pool.sks-keyservers.net:80
--recv-keys
58118E89F3A912897C070ADBF76221572C52609D
gpg: requesting key 2C52609D from hkp server ha.pool.sks-keyservers.net
gpg: key 2C52609D: public key "Docker Release Tool (releasedocker) <docker@docke                                                                                        r.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
+ break
+ sh -c apt-key adv -k 58118E89F3A912897C070ADBF76221572C52609D >/dev/null
+ sh -c mkdir -p /etc/apt/sources.list.d
+ dpkg --print-architecture
+ sh -c echo deb \[arch=amd64\] https://apt.dockerproject.org/repo ubuntu-xenial                                                                                         main > /etc/apt/sources.list.d/docker.list
+ sh -c sleep 3; apt-get update; apt-get install -y -q docker-engine
Hit:1 http://archive.canonical.com/ubuntu xenial InRelease
Hit:2 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:3 http://archive.ubuntu.com/ubuntu xenial InRelease
Hit:4 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Get:5 https://apt.dockerproject.org/repo ubuntu-xenial InRelease [30.2 kB]
Get:6 https://apt.dockerproject.org/repo ubuntu-xenial/main amd64 Packages [3580                                                                                         B]
Fetched 33.8 kB in 0s (62.2 kB/s)
Reading package lists... Done
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
  apparmor aufs-tools cgroupfs-mount git git-man libapparmor-perl
  liberror-perl
Suggested packages:
  apparmor-profiles apparmor-profiles-extra apparmor-docs apparmor-utils
  git-daemon-run | git-daemon-sysvinit git-doc git-el git-email git-gui gitk
  gitweb git-arch git-cvs git-mediawiki git-svn
The following NEW packages will be installed:
  apparmor aufs-tools cgroupfs-mount docker-engine git git-man
  libapparmor-perl liberror-perl
0 upgraded, 8 newly installed, 0 to remove and 72 not upgraded.
Need to get 23.6 MB of archives.
After this operation, 117 MB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libapparmor-per                                                                                        l amd64 2.10.95-0ubuntu2.5 [31.4 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 apparmor amd64                                                                                         2.10.95-0ubuntu2.5 [446 kB]
Get:3 https://apt.dockerproject.org/repo ubuntu-xenial/main amd64 docker-engine                                                                                         amd64 1.13.1-0~ubuntu-xenial [19.3 MB]
Get:4 http://archive.ubuntu.com/ubuntu xenial/universe amd64 aufs-tools amd64 1:                                                                                        3.2+20130722-1.1ubuntu1 [92.9 kB]
Get:5 http://archive.ubuntu.com/ubuntu xenial/universe amd64 cgroupfs-mount all                                                                                         1.2 [4970 B]
Get:6 http://archive.ubuntu.com/ubuntu xenial/main amd64 liberror-perl all 0.17-                                                                                        1.2 [19.6 kB]
Get:7 http://archive.ubuntu.com/ubuntu xenial/main amd64 git-man all 1:2.7.4-0ub                                                                                        untu1 [735 kB]
Get:8 http://archive.ubuntu.com/ubuntu xenial/main amd64 git amd64 1:2.7.4-0ubun                                                                                        tu1 [3006 kB]
Fetched 23.6 MB in 2s (10.5 MB/s)
Preconfiguring packages ...
Selecting previously unselected package libapparmor-perl.
(Reading database ... 26094 files and directories currently installed.)
Preparing to unpack .../libapparmor-perl_2.10.95-0ubuntu2.5_amd64.deb ...
Unpacking libapparmor-perl (2.10.95-0ubuntu2.5) ...
Selecting previously unselected package apparmor.
Preparing to unpack .../apparmor_2.10.95-0ubuntu2.5_amd64.deb ...
Unpacking apparmor (2.10.95-0ubuntu2.5) ...
Selecting previously unselected package aufs-tools.
Preparing to unpack .../aufs-tools_1%3a3.2+20130722-1.1ubuntu1_amd64.deb ...
Unpacking aufs-tools (1:3.2+20130722-1.1ubuntu1) ...
Selecting previously unselected package cgroupfs-mount.
Preparing to unpack .../cgroupfs-mount_1.2_all.deb ...
Unpacking cgroupfs-mount (1.2) ...
Selecting previously unselected package docker-engine.
Preparing to unpack .../docker-engine_1.13.1-0~ubuntu-xenial_amd64.deb ...
Unpacking docker-engine (1.13.1-0~ubuntu-xenial) ...
Selecting previously unselected package liberror-perl.
Preparing to unpack .../liberror-perl_0.17-1.2_all.deb ...
Unpacking liberror-perl (0.17-1.2) ...
Selecting previously unselected package git-man.
Preparing to unpack .../git-man_1%3a2.7.4-0ubuntu1_all.deb ...
Unpacking git-man (1:2.7.4-0ubuntu1) ...
Selecting previously unselected package git.
Preparing to unpack .../git_1%3a2.7.4-0ubuntu1_amd64.deb ...
Unpacking git (1:2.7.4-0ubuntu1) ...
Processing triggers for systemd (229-4ubuntu12) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for libc-bin (2.23-0ubuntu4) ...
Setting up libapparmor-perl (2.10.95-0ubuntu2.5) ...
Setting up apparmor (2.10.95-0ubuntu2.5) ...
update-rc.d: warning: start and stop actions are no longer supported; falling ba                                                                                        ck to defaults
diff: /var/lib/apparmor/profiles/.apparmor.md5sums: No such file or directory
Setting up aufs-tools (1:3.2+20130722-1.1ubuntu1) ...
Setting up cgroupfs-mount (1.2) ...
Setting up docker-engine (1.13.1-0~ubuntu-xenial) ...
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.
dpkg: error processing package docker-engine (--configure):
 subprocess installed post-installation script returned error exit status 1
Setting up liberror-perl (0.17-1.2) ...
Setting up git-man (1:2.7.4-0ubuntu1) ...
Setting up git (1:2.7.4-0ubuntu1) ...
Processing triggers for systemd (229-4ubuntu12) ...
Processing triggers for libc-bin (2.23-0ubuntu4) ...
Errors were encountered while processing:
 docker-engine
E: Sub-process /usr/bin/dpkg returned an error code (1)

However, after this action server respond to cmd docker bot, when I try to run ./discourse-setup, after configurate app.yml it returns Device docker0 does not exist