This folder is used to install local extensions for development. Clone here any extension that you want to work on. This folder in mounted on the ckan-dev service, so any extension located here will be installed when booting up Docker Compose in development mode (docker-compose -f docker-compose.dev.yml up). If running the CKAN container standalone you will need to mount the folder yourself.

You can use the paster template in much the same way as a source install, only executing the command inside the CKAN container and setting the mounted src/ folder as output:

docker-compose -f docker-compose.dev.yml exec ckan-dev /bin/bash -c "paster --plugin=ckan create -t ckanext ckanext-myext -o /srv/app/src_extensions"

From CKAN 2.9 onwards, the paster command used for common CKAN administration tasks has been replaced with the ckan command. You can create an extension as the previous version by executing the command inside the CKAN container and setting the mounted src/ folder as output:

docker-compose -f docker-compose.dev.yml exec ckan-dev /bin/bash -c "ckan generate extension --output-dir /srv/app/src_extensions"

The new extension will be created in the src/ folder. You might need to change the owner of its folder to have the appropiate permissions.