r-studio-test/01_set_env.sh

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#!/usr/bin/with-contenv bash
# shellcheck shell=bash
## Set our dynamic variables in Renviron.site to be reflected by RStudio Server or Shiny Server
exclude_vars="HOME PASSWORD RSTUDIO_VERSION BATCH_USER_CREATION"
for file in /var/run/s6/container_environment/*
do
sed -i "/^${file##*/}=/d" ${R_HOME}/etc/Renviron.site
regex="(^| )${file##*/}($| )"
[[ ! $exclude_vars =~ $regex ]] && echo "${file##*/}=$(cat $file)" >> ${R_HOME}/etc/Renviron.site || echo "skipping $file"
done
## only file-owner (root) should read container_environment files:
chmod 600 /var/run/s6/container_environment/*