Run workflow directly in VM (#3731)

.github/workflows/chez-build.yml

@@ -17,7 +17,6 @@ on:
 jobs:
   build-linux:
     runs-on: ubuntu-20.04
-    container: ubuntu:20.04
 
     strategy:
       fail-fast: false
@@ -30,8 +29,8 @@ jobs:
     steps:
       - name: Download base dependencies
         run: |
-          apt-get update
-          apt-get install -y make git gcc
+          sudo apt-get update
+          sudo apt-get install -y make git gcc
       - uses: actions/checkout@v2
         with:
           fetch-depth: 50
@@ -42,13 +41,13 @@ jobs:
       - name: Install libs for 32-bit
         if: matrix.mach == 'i3le' || matrix.mach == 'ti3le'
         run: |
-          dpkg --add-architecture i386
-          apt-get update
-          apt-get install -y gcc-multilib lib32ncurses-dev libssl-dev:i386
+          sudo dpkg --add-architecture i386
+          sudo apt-get update
+          sudo apt-get install -y gcc-multilib lib32ncurses-dev libssl-dev:i386
       - name: Install libs for 64-bit
         run: |
-          apt-get update
-          apt-get install -y libncurses5-dev libssl-dev libx11-dev
+          sudo apt-get update
+          sudo apt-get install -y libncurses5-dev libssl-dev libx11-dev
       - name: Build Chez with PB boot files
         working-directory: racket/src/ChezScheme
         run: |