details for linux install

Reviewed by @skrdgraph commiting directly

Author: adityasadalage

.github/workflows/cd-dgraph-lambda.yml

@@ -27,8 +27,9 @@ jobs:
       - name: Install linux dependencies
         run: |
           #!/bin/bash
-          apt-get update -y 
-          apt-get install qemu qemu-user-static binfmt-support debootstrap -y          
+          sudo apt-get update -y
+          # buildx requires these base linux packages to run npm install
+          sudo apt-get install qemu qemu-user-static binfmt-support debootstrap -y        
       - name: Build and push dgraph-lambda images
         run: |
           docker buildx create --name builder --driver docker-container