fixup! GHA: Try using a sysroot instead of a container

Author: nicowilliams

.github/workflows/build-linux.yml

@@ -94,22 +94,26 @@ jobs:
       - name: 'Cache sysroot'
         uses: actions/cache@v3
         with:
-          path: sysroot-focal
+          path: ${{ github.workspace }}/sysroot-focal
           key: sysroot-focal-${{ runner.as }}
 
       - name: 'Setup cross-compilation sysroot'
         run: |
           set -vx
+          SYSROOT_PATH="${{ github.workspace }}/sysroot-focal
+          echo "SYSROOT_PATH=$SYSROOT_PATH" >> $GITHUB_ENV
           if [ ! -d sysroot-focal ]; then
-            sudo debootstrap --arch=$(dpkg --print-architecture) --foreign focal sysroot-focal http://archive.ubuntu.com/ubuntu
+            sudo debootstrap --arch=$(dpkg --print-architecture) focal sysroot-focal http://archive.ubuntu.com/ubuntu
           fi
-          sudo chroot sysroot-focal ${PWD}/sysroot-focal/$(which apt-get) update
-          sudo chroot sysroot-focal ${PWD}/sysroot-focal/$(which apt-get) install -y build-essential git wget curl sudo unzip zip autoconf libfreetype6-dev libcups2-dev libx11-dev libxext-dev libxrender-dev libxrandr-dev libxtst-dev libxt-dev libasound2-dev libffi-dev file binutils libfontconfig-dev
+          sudo chroot sysroot-focal apt-get update
+          sudo chroot sysroot-focal apt-get install -y build-essential git wget curl sudo unzip zip autoconf libfreetype6-dev libcups2-dev libx11-dev libxext-dev libxrender-dev libxrandr-dev libxtst-dev libxt-dev libasound2-dev libffi-dev file binutils libfontconfig-dev
           # If we really need gcc-10, we can get it from this PPA:
-          sudo chroot sysroot-focal ${PWD}/sysroot-focal/$(which apt-get) install -y software-properties-common
-          sudo chroot sysroot-focal ${PWD}/sysroot-focal/$(which sudo) add-apt-repository ppa:ubuntu-toolchain-r/test
+          sudo chroot sysroot-focal apt-get install -y software-properties-common
+          sudo chroot sysroot-focal sudo add-apt-repository ppa:ubuntu-toolchain-r/test
           # So the OpenJDK configuration and build can use the sysroot
           sudo chown -R $USER:$USER sysroot-focal
+          echo $PWD
+          ls -F
 
       - name: 'Checkout the JDK source'
         uses: actions/checkout@v3.6.0
@@ -152,6 +156,8 @@ jobs:
 
       - name: 'Configure'
         run: >
+          set -vx &&
+          ls -F &&
           bash configure
           --with-conf-name=${{ inputs.platform }}
           ${{ matrix.flags }}
@@ -169,6 +175,7 @@ jobs:
           ${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
           echo "Dumping config.log:" &&
           cat config.log &&
+          echo PWD=$PWD &&
           exit 1)
 
       - name: 'Build'