DGAT-409: added Jenkinsfile (#2)
DGAT-409: added Jenkinsfile (#2)

* added Jenkinsfile

* use ExternalResources

* reverted ExternalResources

Co-authored-by: Nigel Leck <cfea2496442c091fddd1ba215d62a69ec34e94d0@stSoftware.com.au>
datagovau/ckanext-zippreview,datagovau/ckanext-zippreview,datagovau/ckanext-zippreview