resource: Serialize image processing
resource: Serialize image processing

Fixes #5220

fedelibre/hugo,anthonyfok/hugo,gohugoio/hugo,gohugoio/hugo,mdhender/hugo,fedelibre/hugo,anthonyfok/hugo,fedelibre/hugo,anthonyfok/hugo,mdhender/hugo,mdhender/hugo,gohugoio/hugo,mdhender/hugo,fedelibre/hugo