Grafana docker layer

Hello grafana community I try to add some layer to grafana docker image, I want to add a flespi -data-source plugin I have tried this docket file

FROM grafana/grafana-enterprise:latest

USER root
RUN mkdir  -p /usr/share/grafana/data/plugins
COPY ./flespi-plugin /usr/share/grafana/data/plugins
RUN echo "[plugins]" >> /etc/grafana/grafana.ini && \
    echo "allow_loading_unsigned_plugins = flespi-devices-datasource" >> /etc/grafana/grafana.ini

but I got nothing .

Could you prove that “nothing”, pls

can you access this docker container and see if the setting in grafana.ini worked and plugin folder copied properly