make compatible with openvscode-server

root/etc/cont-init.d/99-install-extensions

@@ -6,10 +6,15 @@ if [ -z ${VSCODE_EXTENSION_IDS+x} ]; then
   exit 0
 fi
 
-
 IFS='|'
 VSCODE_EXTENSION_IDS=(${VSCODE_EXTENSION_IDS})
-for ID in "${VSCODE_EXTENSION_IDS[@]}"; do
-    echo "**** installing extension: ${ID} ****"
+# Use newly available abstraction if available (>= v4.0.x), else fallback to old method.
+if [ -x "$(command -v install-extension)" ]; then
+  for ID in "${VSCODE_EXTENSION_IDS[@]}"; do
+    install-extension ${ID}
+  done
+else
+  for ID in "${VSCODE_EXTENSION_IDS[@]}"; do
     s6-setuidgid abc code-server --user-data-dir /config/data --extensions-dir /config/extensions --install-extension ${ID}
-done
+  done
+fi

root/etc/s6-overlay/s6-rc.d/init-mod-code-server-extension-arguments/run

@@ -6,10 +6,8 @@ if [ -z ${VSCODE_EXTENSION_IDS+x} ]; then
   exit 0
 fi
 
-
 IFS='|'
 VSCODE_EXTENSION_IDS=(${VSCODE_EXTENSION_IDS})
 for ID in "${VSCODE_EXTENSION_IDS[@]}"; do
-    echo "**** installing extension: ${ID} ****"
-    s6-setuidgid abc code-server --user-data-dir /config/data --extensions-dir /config/extensions --install-extension ${ID}
+  install-extension ${ID}
 done