Basic Rule: I want to use "/home2/home/redmine" directory for redmine DB. I want to use sqlite3 for redmine. 1. in host side # adduser redmine 2. in host side. (go into dockers container for copying base files to host) # docker run -it -v /home2/home/redmine/:/usr/src/redmine/HOST --name redmine -p 80:3000 redmine bash 2-1. in redmine container of docker : work dir is /usr/src/redmine # cp -a config HOST/ # cp -a db HOST/ # exit 2-2. in host side : remove all docker contatiners # docker rm $(docker ps -a -q) 2-3. in host side : chown directories. # cd /home2/home/redmine # chown redmine.redmine . -R 3. edit "/home2/home/redmine/config/database.yml" production: adapter: sqlite3 database: sqlite/redmine.db host: localhost 4. Run Redmine with daemonized. # docker run -d -v /etc/passwd:/etc/passwd:ro -v /home2/home/redmine/DB:/usr/src/redmine/sqlite -v /home2/home/redmine/config:/usr/src/redmine/config -v /home2/home/redmin