change reana dev image to latests, for testing purposes

vre-singleuser-reana-dev/Dockerfile

@@ -1,6 +1,6 @@
 FROM jupyter/scipy-notebook:python-3.9.13
 LABEL author="Image based on the work by Muhammad Aditya Hilmy - ESCAPE WP2 2020"
-LABEL maintainer="VRE Team @ CERN 22/23 - E. Garcia, E. Gazzarrini, D. Gosein"
+LABEL maintainer="VRE Team @ CERN 2024 - E. Garcia"
 LABEL org.opencontainers.image.source https://github.com/vre-hub/environments
 ARG BUILD_DATE
 LABEL org.label-schema.build-date=$BUILD_DATE
@@ -11,10 +11,9 @@ USER $NB_UID
 
 RUN pip install reana-client ipykernel 
 
-RUN mkdir -p /certs
-
 USER root
 
+RUN mkdir -p /certs
 ENV JUPYTER_ENABLE_LAB=yes
 
 WORKDIR $HOME