Update Dockerfile

fix vscode dockerfile

Author: prudhomm

feelpp-vscode/Dockerfile

@@ -2,8 +2,9 @@
 
 # See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.145.1/containers/ubuntu/.devcontainer/base.Dockerfile
 
-# [Choice] Ubuntu version: bionic, focal
-ARG VARIANT="focal"
+# [Choice] Ubuntu version: bionic, 
+
+ARG VARIANT="jammy"
 FROM mcr.microsoft.com/vscode/devcontainers/base:0-${VARIANT}
 
 USER root
@@ -19,15 +20,15 @@ RUN apt-get update \
         rm -rf /var/lib/apt/lists/*
 
 ENV DEBIAN_FRONTEND=noninteractive        
-RUN echo "deb http://archive.ubuntu.com/ubuntu focal-proposed main restricted" |  tee -a /etc/apt/sources.list; \ 
-        echo "deb http://archive.ubuntu.com/ubuntu focal-proposed universe" |  tee -a /etc/apt/sources.list; \
-        echo "deb http://archive.ubuntu.com/ubuntu focal-proposed multiverse" |  tee -a /etc/apt/sources.list; \
+RUN echo "deb http://archive.ubuntu.com/ubuntu jammy-proposed main restricted" |  tee -a /etc/apt/sources.list; \ 
+        echo "deb http://archive.ubuntu.com/ubuntu jammy-proposed universe" |  tee -a /etc/apt/sources.list; \
+        echo "deb http://archive.ubuntu.com/ubuntu jammy-proposed multiverse" |  tee -a /etc/apt/sources.list; \
         apt-get -qq update; \
         apt-get -y install tzdata dos2unix
 
 RUN wget -qO - http://apt.feelpp.org/apt.gpg | gpg --dearmor > feelpp.gpg; \
         install -o root -g root -m 644 feelpp.gpg /etc/apt/trusted.gpg.d; \
-        echo "deb [signed-by=/etc/apt/trusted.gpg.d/feelpp.gpg] http://apt.feelpp.org/ubuntu focal ${CHANNEL}" | tee -a /etc/apt/sources.list.d/feelpp.list; \
+        echo "deb [signed-by=/etc/apt/trusted.gpg.d/feelpp.gpg] http://apt.feelpp.org/ubuntu/jammy jammy ${CHANNEL}" | tee -a /etc/apt/sources.list.d/feelpp.list; \
         rm -f feelpp.gpg; \
         apt-get update ;\
         apt-get install -y --no-install-recommends g++ clang-9 man-db libboost-regex1.71.0-icu66 feelpp-quickstart feelpp-data feelpp-tools python3-feelpp libfeelpp-dev make rsync; \