[llvm] workflows: Rewrite build-ci-container to work on larger runners (PR #117353)

[Aiden Grossman via llvm-commits]

================
@@ -18,95 +18,70 @@ on:
       - '.github/workflows/containers/github-action-ci/**'
 
 jobs:
-  # TODO(boomanaiden154): Switch this back to a single stage build when we can
-  # run this on the self-hosted runners and don't have to do it this way to
-  # avoid timeouts.
-  build-ci-container-stage1:
+  build-ci-container:
     if: github.repository_owner == 'llvm'
-    runs-on: ubuntu-latest
+    runs-on: depot-ubuntu-24.04-16
+    outputs:
+      container-name: ${{ steps.vars.outputs.container-name }}
+      container-name-tag: ${{ steps.vars.outputs.container-name-tag }}
+      container-filename: ${{ steps.vars.outputs.container-filename }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at v4
         with:
           sparse-checkout: .github/workflows/containers/github-action-ci/
-      - name: Change podman Root Direcotry
-        run: |
-          mkdir -p ~/.config/containers
-          sudo mkdir -p /mnt/podman
-          sudo chown `whoami`:`whoami` /mnt/podman
-          cp ./.github/workflows/containers/github-action-ci/storage.conf ~/.config/containers/storage.conf
-          podman info
-      - name: Build container stage1
-        working-directory: ./.github/workflows/containers/github-action-ci/
-        run: |
-          podman build -t stage1-toolchain --target stage1-toolchain -f stage1.Dockerfile .
-      - name: Save container image
-        run: |
-          podman save stage1-toolchain > stage1-toolchain.tar
-      - name: Upload container image
-        uses: actions/upload-artifact at v4
-        with:
-          name: stage1-toolchain
-          path: stage1-toolchain.tar
-          retention-days: 1
-  build-ci-container-stage2:
-    if: github.repository_owner == 'llvm'
-    runs-on: ubuntu-latest
-    needs: build-ci-container-stage1
-    permissions:
-      packages: write
-    steps:
       - name: Write Variables
         id: vars
         run: |
           tag=`date +%s`
           container_name="ghcr.io/$GITHUB_REPOSITORY_OWNER/ci-ubuntu-22.04"
           echo "container-name=$container_name" >> $GITHUB_OUTPUT
           echo "container-name-tag=$container_name:$tag" >> $GITHUB_OUTPUT
-
-      - name: Checkout LLVM
-        uses: actions/checkout at v4
-        with:
-          sparse-checkout: .github/workflows/containers/github-action-ci/
-
-      - name: Change podman Root Direcotry
+          echo "container-filename=$(echo $container_name:$tag  | sed -e 's/\//-/g' -e 's/:/-/g').tar" >> $GITHUB_OUTPUT
+      - name: Build container
+        working-directory: ./.github/workflows/containers/github-action-ci/
         run: |
-          mkdir -p ~/.config/containers
-          sudo mkdir -p /mnt/podman
-          sudo chown `whoami`:`whoami` /mnt/podman
-          cp ./.github/workflows/containers/github-action-ci/storage.conf ~/.config/containers/storage.conf
-          podman info
+          podman build -t ${{ steps.vars.outputs.container-name-tag }} -f Dockerfile .
----------------
boomanaiden154 wrote:

One more thing: We can drop the `-f Dockerfile` as that is the default.

https://github.com/llvm/llvm-project/pull/117353