readme + remove legacy yml

README.md

+## installing a jupyter minimal environment in singularityCE/apptainer and docker
+
+Merging https://gitlab.pasteur.fr/tru/singularity-miniconda3-jupyter and https://gitlab.pasteur.fr/tru-docker-miniconda3-jupyter
+with 2 parallel CI builds.
+
+Attn: `:main` is the docker image, `:latest` is the OCI container 
+
+## singularity (singularityCE or apptainer installed)
+```
+singularity build miniconda3-jupyter.sif  oras://registry-gitlab.pasteur.fr/tru/singularity-docker-miniconda3-jupyter:latest
+singularity exec miniconda3-jupyter.sif jupyter-lab  --no-browser
+```
+
+## on Maestro.pasteur.fr
+```
+module add apptainer
+apptainer build miniconda3-jupyter.sif  oras://registry-gitlab.pasteur.fr/tru/singularity-docker-miniconda3-jupyter:latest
+apptainer exec -B /pasteur miniconda3-jupyter.sif jupyter-lab  --no-browser
+```
+
+## from cache only
+```
+singularity exec oras://registry-gitlab.pasteur.fr/tru/singularity-docker-miniconda3-jupyter:latest jupyter-lab  --no-browser
+```
+
+## docker image 
+```
+docker run -ti docker://registry-gitlab.pasteur.fr/tru/singularity-docker-miniconda3-jupyter:main
+```

docker.yml

-image: registry-gitlab.pasteur.fr/dsi-tools/docker-images/docker:latest
-
-services:
-    - registry-gitlab.pasteur.fr/dsi-tools/docker-images/docker:dind
-stages:
-    - build
-
-build:
-  stage: build
-  script:
-    - docker login -u gitlab-ci-token -p "$CI_BUILD_TOKEN" registry-gitlab.pasteur.fr
-    - export  MY_TIME=`date +"%F-%H%M"`
-    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_BUILD_REF_NAME" -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_SHORT_SHA" -t "$CI_REGISTRY_IMAGE:latest" -t "$CI_REGISTRY_IMAGE:$MY_TIME" .  -f Dockerfile
-    - docker push "$CI_REGISTRY_IMAGE"

sing.yml

-singularity:
-  stage: build
-  image:
-    name: quay.io/singularity/singularity:v3.11.0
-    entrypoint: [""]
-  script:
-    - type singularity && singularity version
-    - singularity build singularity.sif Singularity
-    - singularity push --docker-username "${CI_REGISTRY_USER}" --docker-password "${CI_REGISTRY_PASSWORD}" singularity.sif oras://"$CI_REGISTRY_IMAGE":latest
-    - ls -lh singularity.sif
-  artifacts:
-    paths:
-    - singularity.sif