diff --git a/Dockerfile b/Dockerfile
index a7ef536023f471764ef91ce391d8c2466e5b678c..b1f45bd760f1366e4b8d0b2b339b089bdefbe87c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # reference: https://hub.docker.com/_/ubuntu/
-FROM ubuntu:focal
+FROM ubuntu:focal-20210325
 
 ARG DEBIAN_FRONTEND=noninteractive
 
@@ -13,7 +13,6 @@ RUN apt-get -qq update \
  && apt-get -yqq install apt-utils nano curl lsb-release gnupg2 krb5-user \
  && apt-get -yqq clean
 
-
 ###############################################################################
 # Install EOS, thanks to @note(faluchet)
 # following somehow also 
@@ -54,50 +53,119 @@ RUN echo "deb [arch=$(dpkg --print-architecture)] \
  && echo '{"name":"project-l","hostport":"eosproject-l.cern.ch",\
     "remotemountdir":"/eos/project/l/","localmountdir":"/eos/project/l/"}' > \
     /etc/eos/fuse.project-l.conf \ 
- && mkdir -p /eos/project/l \
- # Not a cheap approach, to be discussed 
- && echo 'eosxd -ofsname=home-a' >> ~/.bashrc \
- && echo 'eosxd -ofsname=home-e' >> ~/.bashrc \
- && echo 'eosxd -ofsname=home-s' >> ~/.bashrc \
- && echo 'eosxd -ofsname=project-l' >> ~/.bashrc 
+ && mkdir -p /eos/project/l
 ADD krb5.conf /etc/krb5.conf
 
+# Installing AFS in the docker (not working)
+# the main problem is related I think to docker
+# https://stackoverflow.com/questions/53383431/how-to-enable-systemd-on-dockerfile-with-ubuntu18-04
+# the present policy is to install it on the host_machine and share the volume with the docker
+# e.g., http://abpcomputing.web.cern.ch/guides/openafs/
+# ideally also for eos 
+#RUN apt-get install -y software-properties-common \
+#&&  apt-get update \
+#&&  add-apt-repository ppa:openafs/stable \
+#&&  apt-get update \ 
+#&&  apt-get upgrade \
+#&&  apt install -y openafs-client openafs-modules-dkms openafs-krb5 krb5-config
 
 ###############################################################################
 # Some minimal packages
 ###############################################################################
 RUN apt-get -qq update \
- && apt-get -yqq install x11-apps wget git tmux vim meld \
+ && apt-get -yqq install x11-apps sudo wget git tmux vim meld openssh-server\
  && apt-get -yqq clean
 
+# ADD start.sh /root/start.sh
+# RUN chmod 0755 /root/start.sh \
+# && /root/start.sh
 
 ###############################################################################
 # Install miniconda
 # https://hub.docker.com/r/continuumio/miniconda/dockerfile
 ###############################################################################
 
-ENV LANG=C.UTF-8 LC_ALL=C.UTF-8
-ENV PATH /opt/conda/bin:$PATH
-
-RUN apt-get update --fix-missing && \
-    apt-get install -y wget bzip2 ca-certificates && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
+# from https://towardsdatascience.com/conda-pip-and-docker-ftw-d64fe638dc45
+
+SHELL [ "/bin/bash", "--login", "-c" ]
+
+# Create a non-root user
+ARG username=abpuser
+ARG uid=1000
+ARG gid=100
+ENV USER $username
+ENV UID $uid
+ENV GID $gid
+ENV HOME /home/$USER
+
+RUN adduser --disabled-password \
+    --gecos "Non-root user" \
+    --uid $UID \
+    --gid $GID \
+    --home $HOME \
+    $USER
+
+COPY environment.yml requirements.txt /tmp/
+RUN chown $UID:$GID /tmp/environment.yml /tmp/requirements.txt
+COPY postBuild.sh /usr/local/bin/postBuild.sh
+RUN chown $UID:$GID /usr/local/bin/postBuild.sh && \
+    chmod u+x /usr/local/bin/postBuild.sh
+COPY entrypoint.sh /usr/local/bin/
+RUN chown $UID:$GID /usr/local/bin/entrypoint.sh && \
+    chmod u+x /usr/local/bin/entrypoint.sh
+
+USER $USER
+
+# install miniconda
+ENV MINICONDA_VERSION 4.7.12
+ENV CONDA_DIR $HOME/miniconda3
+RUN wget --quiet https://repo.anaconda.com/miniconda/Miniconda3-$MINICONDA_VERSION-Linux-x86_64.sh -O ~/miniconda.sh && \
+    chmod +x ~/miniconda.sh && \
+    ~/miniconda.sh -b -p $CONDA_DIR && \
+    rm ~/miniconda.sh
+# make non-activate conda commands available
+ENV PATH=$CONDA_DIR/bin:$PATH
+# make conda activate command available from /bin/bash --login shells
+RUN echo ". $CONDA_DIR/etc/profile.d/conda.sh" >> ~/.profile
+# make conda activate command available from /bin/bash --interative shells
+RUN conda init bash
+
+# create a project directory inside user home
+ENV PROJECT_DIR $HOME/app
+RUN mkdir $PROJECT_DIR \
+ && mkdir $HOME/local_host_folder
+WORKDIR $PROJECT_DIR
+
+# build the conda environment
+ENV ENV_PREFIX $HOME/env
+RUN conda update --name base --channel defaults conda && \
+    conda env create --prefix $ENV_PREFIX --file /tmp/environment.yml --force && \
+    conda clean --all --yes
+# run the postBuild script to install any JupyterLab extensions
+RUN conda activate $ENV_PREFIX && \
+    /usr/local/bin/postBuild.sh && \
+    conda deactivate
+
+#ENTRYPOINT [ "/usr/local/bin/entrypoint.sh" ]
+
+###############################3
+#ENV LANG=C.UTF-8 LC_ALL=C.UTF-8
+#ENV PATH /opt/conda/bin:$PATH
+
+
+#RUN apt-get update --fix-missing \
+# && apt-get install -y wget bzip2 ca-certificates \
+# && apt-get clean \
+# && rm -rf /var/lib/apt/lists/*
+
+#RUN wget --quiet https://repo.anaconda.com/miniconda/Miniconda3-4.5.11-Linux-x86_64.sh -O ~/miniconda.sh \
+# && /bin/bash ~/miniconda.sh -b -p /opt/conda \
+# && rm ~/miniconda.sh \
+# && /opt/conda/bin/conda clean -tipsy \
+# && ln -s /opt/conda/etc/profile.d/conda.sh /etc/profile.d/conda.sh \
+# && echo ". /opt/conda/etc/profile.d/conda.sh" >> ~/.bashrc \
+# && echo "conda activate base" >> ~/.bashrc
 
-RUN wget --quiet https://repo.anaconda.com/miniconda/Miniconda3-4.5.11-Linux-x86_64.sh -O ~/miniconda.sh && \
-    /bin/bash ~/miniconda.sh -b -p /opt/conda && \
-    rm ~/miniconda.sh && \
-    /opt/conda/bin/conda clean -tipsy && \
-    ln -s /opt/conda/etc/profile.d/conda.sh /etc/profile.d/conda.sh && \
-    echo ". /opt/conda/etc/profile.d/conda.sh" >> ~/.bashrc && \
-    echo "conda activate base" >> ~/.bashrc
-
-# Installing AFS (not working)
-#RUN apt-get install -y software-properties-common \
-#&&  apt-get update \
-#&&  add-apt-repository ppa:openafs/stable \
-#&&  apt-get update \ 
-#&&  apt-get upgrade
 
 #CMD /bin/bash -c "source root/bin/thisroot.sh":q
 #CMD eosxd -ofsname=home-s
@@ -117,5 +185,9 @@ RUN wget --quiet https://repo.anaconda.com/miniconda/Miniconda3-4.5.11-Linux-x86
 #WORKDIR /abp
 
 # Configure access to Jupyter
-#CMD ["/bin/bash"]
 # CMD jupyter lab --no-browser --ip=0.0.0.0 --allow-root
+
+USER $USER
+CMD ["/bin/bash" ]
+
+#docker run -it -u 0 -v /afs:/afs -v $PWD:/home/abpuser/local_host_folder --rm --cap-add SYS_ADMIN --device /dev/fuse sterbini/test
diff --git a/README.md b/README.md
index 1656ece369e07e0d633a54dda6246bee28a03d98..c982576ef32457e0613438489f271ae5c1e644bc 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 We would like to explore the potential of docker in our community.
 This repoitory is there for a first attempt.
 
-## Main usse case
+## Main use case
 I have a Mac laptop and I would like to work locally on my Mac in a UNIX system. 
 Some of the reasons are
 - work directly on lxplus can be slow (dependent on the node). The advantage of lxplus is that it mounts `afs`, `eos`, `cvmfs` and the HTCondor interface.  
@@ -20,7 +20,7 @@ You do not need to install `eos` on your Mac. This is installed inside the conta
 
 To lauch the docker sterbini/test
 
-```
+```bash
 docker run -ti --cap-add SYS_ADMIN --device /dev/fuse gitlab-registry.cern.ch/sterbini/be-abp-docker:$TAG
 ```
 
@@ -31,7 +31,7 @@ where you can find the $TAG you want at https://gitlab.cern.ch/sterbini/be-abp-d
 In case you want to mount a local folder, this has to be **shared** with Docker Docker (I did it with Docker Desktop on my Mac)
 and then
 
-```
+```bash
 docker run -v /afs:/afs -ti --cap-add SYS_ADMIN --device /dev/fuse gitlab-registry.cern.ch/sterbini/be-abp-docker:$TAG
 ```
 
@@ -46,10 +46,12 @@ kinit $YOUR_NICE_LOGIN_NAME
 To build the docker
 
 ```bash
-docker build . -t sterbini/test
+docker build . -t $IMAGE_NAME
 ```
 
-## To export the X-graphics on mac
+where $IMAGE_NAME can be for example `sterbini/test`
+
+## To export the X-graphics on Mac
 From https://medium.com/@mreichelt/how-to-show-x11-windows-within-docker-on-mac-50759f4b65cb
 
 - Install the latest XQuartz X11 server and run it
@@ -74,6 +76,57 @@ to the `docker run` that is
 docker run --rm -e DISPLAY=host.docker.internal:0 -p 8889:8888 -ti --cap-add SYS_ADMIN --device /dev/fuse -e GRANT_SUDO=yes gitlab-registry.cern.ch/sterbini/be-abp-docker:$TAG
 ```
 
+then you can test from the container
+```bash
+xclock
+```
+
+## Some simple operations with Docker
+
+To see all running containers you can do (https://phoenixnap.com/kb/how-to-ssh-into-docker-container)
+
+```bash
+docker ps
+```
+
+then you can attach from another local-host terminal to the container
+
+```
+docker attach $CONTAINER_ID
+```
+
+the $CONTAINER_ID is the list of the docker processes - you can also use the $CONTAINER_NAME to attach it.
+
+If you use `docker attach` you are attaching the very same terminal.
+If you want to open a new terminal in the container you can do
+```bash
+docker exec -it $CONTAINER_ID /bin/bash
+```
+
+## Containers renaming, stopping and reattaching.
+You can use '-n' option to name a container (no other containers with that name should existin in the Docker Host).
+Then
+```bash
+docker run --name happy_newton -e DISPLAY=host.docker.internal:0 -p 8889:8888 -p 8822:22 -ti --cap-add SYS_ADMIN --device /dev/fuse -e GRANT_SUDO=yes -v /afs:/afs $MY_IMAGE:$MY_TAG
+```
+
+One you exit the container, it will not be removed but it will stopped. You can remove it automatically if you add `--rm` option
+```
+docker run --rm --name happy_newton -e DISPLAY=host.docker.internal:0 -p 8889:8888 -p 8822:22 -ti --cap-add SYS_ADMIN --device /dev/fuse -e GRANT_SUDO=yes -v /afs:/afs $MY_IMAGE:$MY_TAG
+```
+
+It you do not remove the container when you exit it you can restart it and reattach it. For example:
+```
+docker container start happy_newton
+docker attach happy_newton
+```
+
+You can also remove a  
+```
+container rm happy_newton
+``` 
+
+
 # To be done
 
 ```