chore(ci): use public runner for extra backends (#5657)

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

.github/workflows/image_build.yml

@@ -81,6 +81,22 @@ jobs:
   reusable_image-build:
     runs-on: ${{ inputs.runs-on }}
     steps:
+
+      - name: Free Disk Space (Ubuntu)
+        if: inputs.runs-on == 'ubuntu-latest'
+        uses: jlumbroso/free-disk-space@main
+        with:
+          # this might remove tools that are actually needed,
+          # if set to "true" but frees about 6 GB
+          tool-cache: true
+          # all of these default to true, but feel free to set to
+          # "false" if necessary for your workflow
+          android: true
+          dotnet: true
+          haskell: true
+          large-packages: true
+          docker-images: true
+          swap-storage: true
       - name: Force Install GIT latest
         run: |
           sudo apt-get update \
@@ -102,8 +118,8 @@ jobs:
           df -h
           echo
           sudo apt-get remove -y '^llvm-.*|^libllvm.*' || true
-          sudo apt-get remove --auto-remove android-sdk-platform-tools || true
-          sudo apt-get purge --auto-remove android-sdk-platform-tools || true
+          sudo apt-get remove --auto-remove android-sdk-platform-tools snapd || true
+          sudo apt-get purge --auto-remove android-sdk-platform-tools snapd || true
           sudo rm -rf /usr/local/lib/android
           sudo apt-get remove -y '^dotnet-.*|^aspnetcore-.*' || true
           sudo rm -rf /usr/share/dotnet