Upgrade dockerfile to newer ubuntu LTS

utils/multires/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:24.04
 
 # docker build -t generate-panorama .
 # docker run -it -v $PWD:/data generate-panorama /data/image.jpg
@@ -7,7 +7,7 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \
     python3 python3-dev python3-numpy python3-pip python3-pil hugin-tools \
  && rm -rf /var/lib/apt/lists/*
-RUN pip3 install pyshtools==4.9.1
+RUN pip3 install --break-system-packages pyshtools
 
 ADD generate.py /generate.py
 ENTRYPOINT ["python3", "/generate.py"]