Update to 3.21 and add shutdown script

Author: afgane

extensions/galaxy/Dockerfile

@@ -1,5 +1,5 @@
-ARG BASE_IMAGE=ghcr.io/bioconductor/bioconductor_docker
-ARG TAG=3.20
+ARG BASE_IMAGE=bioconductor/bioconductor_docker
+ARG TAG=RELEASE_3_21
 
 FROM ${BASE_IMAGE}:${TAG}
 RUN apt update -y && apt install -y net-tools python3-bioblend nginx && \
@@ -8,12 +8,14 @@ RUN apt update -y && apt install -y net-tools python3-bioblend nginx && \
     chown -R rstudio:rstudio /usr/local/lib/R/library && \
     chown -R rstudio:rstudio /usr/local/lib/R/doc && \
     echo "alias ll='ls -l'" >> ~/.bashrc && \
+    echo "rstudio ALL=(ALL) NOPASSWD: /usr/bin/s6-svscanctl" >> /etc/sudoers && \
     apt-get autoremove -y && apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/*
 
 RUN mkdir -p /etc/services.d/nginx
 COPY service-nginx-start /etc/services.d/nginx/run
 COPY proxy.conf /etc/nginx/sites-enabled/default
+COPY shutdown.R /home/rstudio/shutdown.R
 
 ENV PIP_USER=0
 

extensions/galaxy/shutdown.R

@@ -0,0 +1,3 @@
+# Shutdown script for Galaxy Interactive tool.
+# To shut down this IT, run this script (or below command).
+system("sudo s6-svscanctl -t /var/run/s6/services/", wait = FALSE)