version: '3.7'
services:
  matomo:
    image: matomo:latest
    container_name: "matomo"
    restart: always
    networks: 
      - default
    depends_on:
      - matomo-mysql
    ports:
      - 9004:80
    environment:
      - "MATOMO_DATABASE_ADAPTER=MYSQLI"
      - "MATOMO_DATABASE_TABLES_PREFIX=matomo_"
      - "MATOMO_DATABASE_HOST=matomo"
      - "MATOMO_DATABASE_USERNAME=matomo"
      - "MATOMO_DATABASE_PASSWORD=matomo"
      - "MATOMO_DATABASE_DBNAME=matomo"
  matomo-mysql:
    image: mariadb:latest
    container_name: "matomo-mysql"
    restart: always
    networks:
      - default
    environment:
      - "MYSQL_ROOT_PASSWORD=matomo"
      - "MYSQL_USER=matomo"
      - "MYSQL_PASSWORD=matomo"
      - "MYSQL_DATABASE=matomo"
    ports:
      - 9003:3306
networks:
  default:

docker-compose down -v
docker-compose up -d
echo "-----------------------------------------"
echo ">>> changing permissions using 'console diagnostics:run'"
docker exec matomo sh -c "/var/www/html/console diagnostics:run"
echo ">>> sleeping to let console diagnostics:run do its work"
sleep 5
echo "-----------------------------------------"
echo ">>> this directory has correct permissions" 
docker exec matomo sh  -c "ls -la /var/www/html"
echo "-----------------------------------------"
echo ">>> but not this directory:"
docker exec matomo sh  -c "ls -la /var/www/html/tmp "
echo "-----------------------------------------"
echo ">>> access failure"
curl localhost:9004 | grep -o "Matomo couldn't write to some directories"

$ ./reproduce_bug.sh
Stopping matomo       ... done
Stopping matomo-mysql ... done
Removing matomo       ... done
Removing matomo-mysql ... done
Removing network tmp_default
Creating network "tmp_default" with the default driver
Creating matomo-mysql ... done
Creating matomo       ... done
-----------------------------------------
>>> changing permissions using 'console diagnostics:run'

The configuration file {/var/www/html/config/config.ini.php} has not been found or could not be read.
 » Please check that /var/www/html/config/config.ini.php is readable by the user 'root'. 


INFO [2019-12-06 12:50:00] 24  Unable to test if mod_pagespeed is enabled: the request to http://unknown/var/www/html/console?module=Installation&action=getEmptyPageForSystemCheck failed
Forced SSL Connection: WARNING We recommend using Matomo over secure SSL connections only. Please click here continue the installation process over SSL.
1 warnings detected
>>> sleeping to let console diagnostics:run do its work
-----------------------------------------
>>> this directory has correct permissions
total 348
drwxr-xr-x 12 www-data 1000  4096 Nov 27 05:29 .
drwxr-xr-x  1 root     root  4096 Nov 22 15:47 ..
-rw-r--r--  1 www-data 1000 74086 Nov 27 04:54 CHANGELOG.md
-rw-r--r--  1 www-data 1000   929 Oct 29 04:16 CONTRIBUTING.md
-rw-r--r--  1 www-data 1000  8399 Oct 29 04:16 LEGALNOTICE
-rw-r--r--  1 www-data 1000 35146 May 13  2019 LICENSE
-rw-r--r--  1 www-data 1000  4616 May 13  2019 PRIVACY.md
-rw-r--r--  1 www-data 1000  5685 Nov 27 04:54 README.md
-rw-r--r--  1 www-data 1000  1174 Oct 29 04:16 SECURITY.md
drwxr-xr-x  3 www-data 1000  4096 Nov 27 05:29 config
-rwxr-xr-x  1 www-data 1000   689 Nov 27 04:54 console
drwxr-xr-x 51 www-data 1000  4096 Nov 27 04:54 core
-rw-r--r--  1 www-data 1000   732 Nov 27 04:54 index.php
drwxr-xr-x  2 www-data 1000  4096 Nov 27 04:54 js
drwxr-xr-x  2 www-data 1000  4096 Nov 27 04:54 lang
drwxr-xr-x 11 www-data 1000  4096 Oct 29 04:16 libs
-rw-r--r--  1 www-data 1000 67898 Nov 27 04:54 matomo.js
-rw-r--r--  1 www-data 1000   349 May 13  2019 matomo.php
drwxr-xr-x  8 www-data 1000  4096 Dec  6 02:59 misc
-rw-r--r--  1 www-data 1000 67898 Nov 27 04:54 piwik.js
-rw-r--r--  1 www-data 1000  2762 Nov 27 04:54 piwik.php
drwxr-xr-x 67 www-data 1000  4096 Nov 27 05:29 plugins
drwxr-xr-x  2 www-data 1000  4096 Nov 27 05:29 tests
drwxr-xr-x 10 www-data 1000  4096 Dec  6 12:50 tmp
drwxr-xr-x 22 www-data 1000  4096 Nov 27 05:29 vendor
-----------------------------------------
>>> but not this directory:
total 48
drwxr-xr-x 10 www-data 1000 4096 Dec  6 12:50 .
drwxr-xr-x 12 www-data 1000 4096 Nov 27 05:29 ..
drwxr-x---  2 root     root 4096 Dec  6 12:50 assets
drwxr-x---  2 root     root 4096 Dec  6 12:50 cache
drwxr-x---  2 root     root 4096 Dec  6 12:50 climulti
-rw-r--r--  1 root     root   20 Dec  6 12:50 index.htm
-rw-r--r--  1 root     root   20 Dec  6 12:50 index.php
drwxr-x---  2 root     root 4096 Dec  6 12:50 latest
drwxr-x---  2 root     root 4096 Dec  6 12:50 logs
drwxr-x---  2 root     root 4096 Dec  6 12:50 sessions
drwxr-x---  2 root     root 4096 Dec  6 12:50 tcpdf
drwxr-x---  2 root     root 4096 Dec  6 12:50 templates_c
-----------------------------------------
>>> access failure
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  3148  100  3148    0     0  43123      0 --:--:-- --:--:-- --:--:-- 43123
Matomo couldn't write to some directories