Prune unused modules from dynamic-link

cnpem / epics-in-docker

Container images with EPICS and modules

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Prune unused modules from dynamic-link #19

Open henriquesimoes opened 1 year ago

henriquesimoes commented 1 year ago

dynamic-link and no-build targets use a trivial copy all from /opt, leading to unused modules and unused build artifacts to be copied to the resulting IOC image.

Any level of pruning could easily and greatly improve the final image size.

_Discussion started by @ericonr in https://github.com/cnpem/epics-in-docker/pull/15#discussion_r1314850489_

ericonr commented 1 year ago

Possible strategies:

list of used modules in a docker-compose variable
list of used modules taken from original RELEASE file before it's replaced
prune directories at the /opt/modules and /opt/modules/areaDetector levels when they don't appear in lddoutput for all executables/libraries in IOC / final directory (for no-build mode)