update dask tutorial and docker image in eosc-pan-git
install packages from the recent dask tutorial at https://github.com/dask/dask-tutorial binder/environment.yaml in the docker image built in https://eosc-pan-git.desy.de/pan/dask-docker And review if fixes by @tim.wetzel in the imported version at https://eosc-pan-git.desy.de/htw/dask-tutorial/-/commits/main are still needed or need updates