Update _setup.sh

Updated to not use deprecated apt-key.

Uses the keyring directory /usr/share/keyrings and the apt "signed-by" functionality as recommended by Debian.
https://wiki.debian.org/DebianRepository/UseThirdParty

deb/src/_setup.sh

@@ -312,28 +312,35 @@ if [ -f "/etc/apt/sources.list.d/chris-lea-node_js-$DISTRO.list" ]; then
 fi
 
 print_status 'Adding the NodeSource signing key to your keyring...'
+keyring='/usr/share/keyrings'
+node_key_url="https://deb.nodesource.com/gpgkey/nodesource.gpg.key"
+local_node_key="$keyring/nodesource.gpg"
 
 if [ -x /usr/bin/curl ]; then
-    exec_cmd 'curl -s https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -'
+    exec_cmd "curl -s $node_key_url | gpg --dearmor | tee $local_node_key >/dev/null"
 else
-    exec_cmd 'wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -'
+    exec_cmd "wget -O - $node_key_url | gpg --dearmor | tee $local_node_key >/dev/null"
 fi
 
 print_status "Creating apt sources list file for the NodeSource ${NODENAME} repo..."
 
-exec_cmd "echo 'deb https://deb.nodesource.com/${NODEREPO} ${DISTRO} main' > /etc/apt/sources.list.d/nodesource.list"
-exec_cmd "echo 'deb-src https://deb.nodesource.com/${NODEREPO} ${DISTRO} main' >> /etc/apt/sources.list.d/nodesource.list"
+exec_cmd "echo 'deb [signed-by=$local_node_key] https://deb.nodesource.com/${NODEREPO} ${DISTRO} main' > /etc/apt/sources.list.d/nodesource.list"
+exec_cmd "echo 'deb-src [signed-by=$local_node_key] https://deb.nodesource.com/${NODEREPO} ${DISTRO} main' >> /etc/apt/sources.list.d/nodesource.list"
 
 print_status 'Running `apt-get update` for you...'
 
 exec_cmd 'apt-get update'
 
+yarn_site='https://dl.yarnpkg.com/debian'
+yarn_key_url="$yarn_site/pubkey.gpg"
+local_yarn_key="$keyring/yarnkey.gpg"
+
 print_status """Run \`${bold}sudo apt-get install -y ${NODEPKG}${normal}\` to install ${NODENAME} and npm
 ## You may also need development tools to build native addons:
      sudo apt-get install gcc g++ make
 ## To install the Yarn package manager, run:
-     curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
-     echo \"deb https://dl.yarnpkg.com/debian/ stable main\" | sudo tee /etc/apt/sources.list.d/yarn.list
+     curl -sL $yarn_key_url | gpg --dearmor | sudo tee $local_yarn_key >/dev/null
+     echo \"deb [signed-by=$local_yarn_key] $yarn_site stable main\" | sudo tee /etc/apt/sources.list.d/yarn.list
      sudo apt-get update && sudo apt-get install yarn
 """