code-server-r update/add workflows

root/etc/cont-init.d/94-r-src

@@ -1,12 +0,0 @@
-#!/usr/bin/with-contenv bash
-
-echo "**** Adding r repo ****"
-if ! dpkg -l | grep gnupg > /dev/null; then
-    apt-get update && apt-get install -y gnupg
-fi
-
-if [ ! -f "/etc/apt/sources.list.d/r.list" ]; then
-    curl -s https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | apt-key add -
-    source /etc/lsb-release
-    echo "deb https://cloud.r-project.org/bin/linux/ubuntu ${DISTRIB_CODENAME}-cran40/" > /etc/apt/sources.list.d/r.list
-fi

root/etc/cont-init.d/95-apt-get

@@ -1,5 +0,0 @@
-#!/usr/bin/with-contenv bash
-
-if [ -f /usr/bin/apt ]; then
-    apt-get update
-fi

root/etc/cont-init.d/98-r

@@ -1,6 +0,0 @@
-#!/usr/bin/with-contenv bash
-
-echo "**** installing R dev environment ****"
-apt-get install -y \
-    build-essential \
-    r-base

root/etc/s6-overlay/s6-rc.d/init-mod-code-server-r-add-package/run

@@ -6,9 +6,9 @@ fi
 
 if [ ! -f "/etc/apt/sources.list.d/r.list" ]; then
     echo "**** Adding r packages to install list ****"
-    curl -s https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | apt-key add -
+    curl -fsSL https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | tee /usr/share/keyrings/r.asc >/dev/null
     source /etc/lsb-release
-    echo "deb https://cloud.r-project.org/bin/linux/ubuntu ${DISTRIB_CODENAME}-cran40/" > /etc/apt/sources.list.d/r.list
+    echo "deb [signed-by=/usr/share/keyrings/r.asc] https://cloud.r-project.org/bin/linux/ubuntu ${DISTRIB_CODENAME}-cran40/" > /etc/apt/sources.list.d/r.list
     echo "\
         build-essential \
         r-base" >> /mod-repo-packages-to-install.list