use registry image

.gitlab-ci.yml

 before_script:
+  - docker pull git.ia2.inaf.it:5050/hotwheels/gitlab-profile
   - |
-    docker build --build-arg CACHE_BUSTER=$(openssl rand -hex 12) --build-arg USER=${CI_REGISTRY_USER} --build-arg PASS=${CI_JOB_TOKEN} -t hwmd -f - . <<EOF
-    FROM debian:latest
-    ENV DEBIAN_FRONTEND=noninteractive
-    RUN apt-get update
-    RUN apt-get install -y bash git gcc-12 openmpi-bin libopenmpi-dev build-essential python3 pip indent
-    RUN rm /usr/lib/python*/EXTERNALLY-MANAGED
-    RUN pip install -U autopep8 Jinja2 numpy PyYAML libclang
-    ENV HW_FLAGS="-Wl,--no-as-needed"
-    ENV MPIRUN='mpirun --allow-run-as-root -n 2'
-    ENV OMP_NUM_THREADS=2
-    RUN apt-get install -y libgsl-dev libgsl27
-    RUN pip install matplotlib
-    RUN apt-get install -y libfftw3-dev libfftw3-mpi-dev
-    RUN apt-get install -y wget
-    RUN pip install Jinja2 numpy  PyYAML libclang numba 
+    docker build --no-cache -t hw -f - . <<EOF
+    FROM git.ia2.inaf.it:5050/hotwheels/gitlab-profile
     RUN git config --global url."https://${CI_REGISTRY_USER}:${CI_JOB_TOKEN}@www.ict.inaf.it/gitlab".insteadOf ssh://git@git.ia2.inaf.it
     WORKDIR /app
     COPY . /app
     EOF
   
-install:
+testing:
   script:
-    - docker run hwmd bash -c 'set -xev;  . test_install_octree.bash && . test_checkup.bash && . test_pip_all.bash && . test_editable.bash && . test_bulk.bash'
-    - docker run hwmd bash -c 'set -xev; . test_install_pm.bash && python3 test_dmo_NFW_fixed_timestep.py'
+    - docker run hw bash -c 'set -xev; . test_install_octree.bash && . test_checkup.bash && . test_pip_all.bash && . test_editable.bash && . test_bulk.bash'
+    - docker run hw bash -c 'set -xev; . test_install_pm.bash && python3 test_dmo_NFW_fixed_timestep.py'