I haven´t try.
But maybe Google Sheets can hold articles and images with a public google Photo as CDN?
And then create a sync between Google Sheet article name / ID and connect it to users/groups?
Just fishing here 
I haven´t try.
But maybe Google Sheets can hold articles and images with a public google Photo as CDN?
And then create a sync between Google Sheet article name / ID and connect it to users/groups?
Just fishing here