Use concurrency to separate jobs onto two builders

Author: zacblazic

.github/workflows/test.yml

@@ -9,35 +9,15 @@ env:
   IMAGE: zappi/vllm-openai
 
 jobs:
-  prepare:
+  build-amd64:
     runs-on: ubuntu-latest
+    concurrency: amd64
     steps:
       - name: Free additional disk space
         run: |
           df -h
-          echo "Removing large packages"
-          sudo apt-get remove -y '^dotnet-.*'
-          sudo apt-get remove -y '^llvm-.*'
-          sudo apt-get remove -y 'php.*'
-          sudo apt-get remove -y azure-cli
-          sudo apt-get remove -y firefox
-          sudo apt-get remove -y powershell
-          sudo apt-get remove -y google-chrome-stable
-          sudo apt-get remove -y google-cloud-cli
-          sudo apt-get remove -y mono-devel
-          sudo apt-get autoremove -y
-          sudo apt-get clean
-          df -h
-          echo "Removing large directories"
-          # deleting 15GB
-          rm -rf /usr/share/dotnet/
           rm -rf /opt/hostedtoolcache/
           df -h
-
-  build-amd64:
-    runs-on: ubuntu-latest
-    needs: prepare
-    steps:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Prepare image metadata
@@ -63,8 +43,13 @@ jobs:
 
   build-arm64:
     runs-on: ubuntu-latest
-    needs: prepare
+    concurrency: arm64
     steps:
+      - name: Free additional disk space
+        run: |
+          df -h
+          rm -rf /opt/hostedtoolcache/
+          df -h
       - name: Checkout
         uses: actions/checkout@v4
       - name: Prepare image metadata