Docker image for wordpress tailored for Cityscope workbench This extends the official wordpress image in Dockerhub The extension automtically installs wordpress using the wp-cli interface with username and credentials passed in from the Cityscope workbench A set of plugins are also installed to make the auto generated blog work with the Curious Edinburgh app.
There are three scripts here that are ran whenever a container is started:
- docker-entrypoint.sh comes from the parent Docker image, and it essentially installs Wordpress and does some basic configuration, before running Apache
- /cityscope-entrypoint.sh does some pre-preparation that has to be done before Wordpress is installed
- apache2dummy does configuration of the template application, and has to be done after Wordpress is installed. The odd name, and the fact it's on the PATH, is because docker-entrypoint.sh checks the name of the scripts passed to it
We add a link in the sidebar to start the tour-app. This link starts with a custom protocol that the phone interprets and sends to the correct app, e.g cityscope-tour://jupyter.edina.ac.uk/username/... By default, Wordpress scans links when they are added to make sure they come from a whitelist of allowed protocols (http, https etc.). To override this, we've had to add a filter adding 'cityscope-tour' to the list of allowed protocols. This is placed inside the theme we are using, i.e. resources/suffusion/functions.php, so if we ever change either the protocol we want to use or the theme, we need to make sure this is updated.
Oddly enough, this link-scanning behavious only seems to happen when using the wp widget add/update commands, not if you actually add the link through the Wordpress interface.
Normally, this image is built automatically and can be found in Dockerhub. Similarly, it's normally run via Jupyterhub. The below commands are for development purposes.
docker build -t cityscope/wordpress .
docker run -d -v "$PWD/data:/data" --user 1000 -e "MYSQL_ROOT_PASSWORD=password" --name mysql_test mysql mysqld --datadir /data/mysql --innodb-buffer-pool-size=5M --innodb-log-buffer-size=256K --query-cache-size=0 --max-connections=10 --key-buffer-size=8 --thread-cache-size=0 --host-cache-size=0 --innodb-ft-cache-size=1600000 --innodb-ft-total-cache-size=32000000 --thread-stack=131072 --sort-buffer-size=32K --read-buffer-size=8200 --read-rnd-buffer-size=8200 --max-heap-table-size=16K --tmp-table-size=1K --bulk-insert-buffer-size=0 --join-buffer-size=128 --net-buffer-length=1K --innodb-sort-buffer-size=64K --binlog-cache-size=4K --binlog-stmt-cache-size=4K
docker run -d -v "$PWD/data:/data" --link mysql_test:mysql -p 45000:80 --name wordpress_test cityscope/wordpress -baseurl $( hostname -f ):45000 -credential password -username wordpress