Running FlowchartWiki in a Docker Container

For details about FlowchartWiki, an extension for MediaWiki, see

Copyright (c) 2015 Thomas Kock.

Licensed under the Academic Free License version 3.0. (see LICENSE-AFL-3.0.txt)

(The Academic Free License grants similar rights to the BSD, MIT and Apache licenses. See:


  • docker-compose


  • uses two containers: 1: flowchartwiki, 2: MySQL, administered by docker-compose.
  • To be used behind the nginx-proxy from
  • The flowchartwiki/Dockerfile and nginx configuration are based on with graphviz added and git as well as some php-* packages being removed.
  • tested with MediaWiki 1.25.1
  • uses Docker-volumes for host-based storage of MySQL database and MediaWiki files.
  • a sample LocalSettings.php is included in ./flowchartwiki/LocalSettings-sample.php
  • nginx-site.conf is setup for the wiki to be deployed in /var/www/wiki

Setup and installation

download and unpack mediawiki into ./flowchartwiki/volumes/var/www/wiki directory

configure MySQL

  • update the docker-compose.yml with your MySQL Settings (user,pwd)

  • you might need to change or remove the mem_limit setting in docker-compose.yml, depending on your database / wiki size.

  • manually initialize the MySQL database. (It might not properly initialize, when started with docker-compose the first time.)

    (replace user, password and path...)

docker run --name dockerflowchartwiki_mysql_1 \
   --env='MYSQL_DATABASE=flowchartwiki' \
   --env='MYSQL_ROOT_PASSWORD=rootpass' \
   --env='MYSQL_USER=user' \
   --env='MYSQL_PASSWORD=userpass' \
   -v <path-to->/flowchartwiki-docker/mysql/volumes/var/lib/mysql:/var/lib/mysql \
   -p 3307:3306 \

build and start the container

  • uncomment the port: 8000:80 statements in docker-compose.yml to temporarily enable "localhost" access.
  • set the VIRTUAL_HOST: in docker-compose.yml
docker-compose build
docker-compose up

configure mediawiki

  • in your browser start http://localhost:8000/wiki/
  • use database settings from docker-compose.yml, db-server is "mysql"
  • copy the newly created LocalSettings.php to flowchartwiki/volumes/var/www/wiki/

download and setup flowchartwiki

setup mysql tables for FlowchartWiki

docker exec -it flowchartwiki_mysql_1 bash
mysql -u root -p flowchartwiki
  pass: rootpass (from docker-compose.yml)
  • cut & paste the extensions/flowchartwiki/maintenance/schema_mysql.sql file contents.
  • exit the container.

update LocalSettings.php

At the end of the file add:

# ----- flowchartwiki config -----
# Disable cache - otherwise graphs are not updated properly
$wgCachePages = false;
$wgCacheEpoch = max( $wgCacheEpoch, gmdate( 'YmdHis' ) );
# Include libraries
$fchw['GraphvizDot'] = "/usr/bin/dot";
# ----- flowchartwiki config -----
# ------ nginx ----------
$wgUsePathInfo      = true;
# ------ END nginx ----------

create directory images/flowchartwiki in flowchartwiki/volumes/var/www/images

mkdir flowchartwiki
chmod o+w flowchartwiki

Check your installation

for deployment from localhost to live site

  • modify LocalSettings - set wgServer.
  • modify docker-compose.yml settings: port, virtual_host, memory.
  • backup mysql (see below)
  • copy directory structure to server (except mysql /var/lib/mysql dirs - It might work, I didn't try)
  • re-create mysql and import backup
  • docker-compose build
  • docker-compose up

Some additional tips:

  • backup of mysql "from inside" the docker-container into the filesystem / volume mounted by docker
docker exec -it flowchartwiki_mysql_1 bash
mysqldump --opt -u root -p flowchartwiki > /var/lib/mysql/dump-DATE.sql
pass: rootpass (from docker-compose.yml)
  • import of mediawiki dump
docker exec -it flowchartwiki_flowchartwiki_1 bash
cd /var/www
php ./maintenance/importDump.php < dump.xml