Update CKAN Dockerfile.worker with CKAN_SITE_URL environment variable…

… to use the localhost CKAN Web server for CKAN job workers

ckan/Dockerfile.worker

@@ -4,6 +4,7 @@ FROM ${CKAN_IMAGE}
 # Override the default CKAN config plugins to only use the ones we need for the worker
 ENV CKAN__PLUGINS="dbca datastore xloader scheming_datasets qa archiver report envvars"
 RUN ckan config-tool $CKAN_INI "ckan.plugins = ${CKAN__PLUGINS}"
+ENV CKAN_SITE_URL=http://localhost:5000
 
 # Install logrotate
 RUN apk add logrotate