With this images you can create your own custom plone image.
on a Dockerfile you need to add:
FROM ramonnb/docker-base-plone:5.0
COPY custom-buildout.cfg /plone/custom-buildout.cfg # Copy all you need on the buildout
RUN cd /plone && ./bin/buildout -v -c custom-buildout.cfg
# You can create complex entrypoint shell script CMD "./bin/instance fg"
If you wanna try plone version you can:
docker run --name plone -p 8080:8080 ramonnb/docker-base-plone:5.0