Edit Dockerfile to remove conda context

Dockerfile

@@ -2,7 +2,5 @@ FROM gitlab-registry.synchrotron-soleil.fr/pa/collective-effects/python_mpi:late
 LABEL name mbtrack2
 USER dockeruser
 WORKDIR '/home/dockeruser'
-ENV PATH ${PATH}:/home/dockeruser/miniconda3/bin:/home/dockeruser/miniconda3/condabin
-RUN pip3 install accelerator-toolbox==0.5.0
 COPY --chown=dockeruser mbtrack2 /home/dockeruser/mbtrack2
 ENV PYTHONPATH=/home/dockeruser/
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