This dockerfile creates an etherpad image that is based on CentOS and utilizes a centos/mariadb container for a database.

To build the etherpad container simply:

docker build -t <yourname>/etherpad . 

First get the mariadb container up and running:

VOLUME='-v /var/lib/mysql' DATABASE=mydb USER=myuser PASSWORD=password ROOTPASS=rootpass docker run -d \ -e MYSQL_USER=$USER \ -e MYSQL_PASSWORD=$PASSWORD \ -e MYSQL_DATABASE=$DATABASE \ -e MYSQL_ROOT_PASSWORD=$ROOTPASS \ $VOLUME --name=mariadb centos/mariadb 

NOTE:: If you don't want a VOLUME then don't assign the variable

Next start the etherpad with the db container linked:

docker run --link=mariadb:db -d --name etherpad -p 9001:9001 <yourname>/etherpad 

Now connect to etherpad on localhost:9001 from your browser.