Thank you for your replies.
I followed Xibo 1.8.0 with Docker on Ubuntu 16.04 several times 
I installed 1.8.2 and it is the same.
Please find below some informations.
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root@xibo-vm:/opt/xibo# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS
NAMES
83fe4d3145d5 xibosignage/xibo-cms:release_1.8.2 “/entrypoint.sh” 2 minutes ago Up 25 seconds 0.0.0.0:80->80/tcp
xibo_cms-web_1
d685fe099ce6 xibosignage/xibo-xmr:release_1.8.2 “/entrypoint.sh” 2 minutes ago Up 26 seconds 0.0.0.0:9505->9505/tcp, 50001/tcp
xibo_cms-xmr_1
a33024da58e3 xibosignage/xibo-xmr:release_1.8.0 “/entrypoint.sh” 24 hours ago Up 26 seconds 9505/tcp, 50001/tcp
clever_ramanujan
509e223a6b33 xibosignage/xibo-cms:release_1.8.0 “/entrypoint.sh” 24 hours ago Up 26 seconds 80/tcp
ecstatic_payne
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root@xibo-vm:/opt/xibo# ll
total 108
drwxr-xr-x 3 root root 4096 Jun 28 16:07 ./
drwxr-xr-x 5 root root 4096 Jun 27 15:35 …/
-rw-rw-r-- 1 admin-xibo admin-xibo 1137 Jun 26 12:49 cms_custom-ports.yml.template
-rw-rw-r-- 1 admin-xibo admin-xibo 807 Jun 26 12:49 cms_remote-mysql.yml
-rwxrwxrwx 1 root root 1835 Jun 27 16:12 config.env*
-rw-rw-r-- 1 admin-xibo admin-xibo 2331 May 30 08:51 config.env.template
-rw-rw-r-- 1 admin-xibo admin-xibo 1861 Feb 22 16:09 config.env.template-remote-mysql
-rw-rw-r-- 1 admin-xibo admin-xibo 1133 Jun 26 14:04 docker-compose.yml.template
-rw-rw-r-- 1 admin-xibo admin-xibo 34520 Jun 22 2016 LICENSE
-rw-rw-r-- 1 admin-xibo admin-xibo 2088 Feb 22 08:43 README.md
drwxrwxrwx 4 root root 4096 Jun 27 16:14 shared/
-rw-r–r-- 1 root root 14824 May 25 17:01 xibo-docker-1.8.0.tar.gz
-rw-r–r-- 1 root root 15313 Jun 26 14:27 xibo-docker-1.8.2.tar.gz