Reserve other volumes (#24538)

.github/actions/setup/action.yml

@@ -11,20 +11,20 @@ outputs:
 runs:
   using: "composite"
   steps:
-    # Prune preinstalled images, then stop docker so we can mount more space at
-    # /var/lib/docker
+    # Stop docker so we can mount more space at /var/lib/docker
     - name: Stop docker
-      run: |
-        sudo docker image prune --all --force
-        sudo systemctl stop docker
+      run: sudo systemctl stop docker
       shell: bash
     # This creates a virtual volume at /var/lib/docker to maximize the size
     # As of 2/14/2024, this results in 97G for docker images
-    # Keep 4G on root for setup-qemu/buildx caches in ~/.docker and the tool cache
+    # Runners no longer have a separate /mnt disk, so the temp PV is also carved
+    # from root and temp-reserve-mb is what actually stays free on root. Keep 4G
+    # there for setup-qemu/buildx caches in ~/.docker and the tool cache
     - name: Maximize build space
       uses: easimon/maximize-build-space@master
       with:
-        root-reserve-mb: 4096
+        root-reserve-mb: 8192
+        temp-reserve-mb: 4096
         remove-dotnet: 'true'
         remove-android: 'true'
         remove-haskell: 'true'