With plugins.txt

workflow-job:2.11
workflow-aggregator:2.5

......

and

1. install plugins
   COPY plugins.txt /usr/share/jenkins/plugins.txt
   RUN cat /usr/share/jenkins/plugins.txt | while read in; do /usr/local/bin/install-plugins.sh "$in"; done; exit 0   

Docker image install latest version (2.12) of workflow-aggregator:2.5 dependency instead of 2.11 as selected

Thanks

Nico