[ci] Add a workflow to import images to Alibaba Cloud

Add a workflow to build and import the official iPXE images for
Alibaba Cloud.  As with the AWS and Google Cloud imports, treat this
as a workflow that must be triggered manually.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

.github/workflows/ali-import.yml

@@ -0,0 +1,101 @@
+name: Alibaba Cloud Import
+
+on:
+  push:
+    branches:
+      - alitest
+  workflow_dispatch:
+
+env:
+  MAKEFLAGS: "-j4 GITVERSION=${{ github.sha }}"
+
+jobs:
+
+  build:
+    name: Build / ${{ matrix.arch }}-${{ matrix.platform }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - arch: arm64
+            platform: efi
+          - arch: x86_64
+            platform: efi
+          - arch: x86_64
+            platform: pcbios
+    container:
+      image: ghcr.io/ipxe/ipxe-builder-${{ matrix.arch }}
+    env:
+      bindir: bin-${{ matrix.arch }}-${{ matrix.platform }}
+    steps:
+
+      - name: Check out code
+        uses: actions/checkout@v6
+
+      - name: Build
+        working-directory: src
+        run: |
+          make CONFIG=cloud EMBED=config/cloud/ali.ipxe \
+               ${{ env.bindir }}/ipxe.usb
+
+      - name: Upload
+        uses: actions/upload-artifact@v6
+        with:
+          name: ${{ env.bindir }}
+          if-no-files-found: error
+          path: |
+            src/${{ env.bindir }}/ipxe.usb
+
+  import:
+    name: Import
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    container:
+      image: ghcr.io/ipxe/ipxe-builder-cloud
+    env:
+      binaries: >-
+        bin-arm64-efi/ipxe.usb
+        bin-x86_64-efi/ipxe.usb
+        bin-x86_64-pcbios/ipxe.usb
+      family: >-
+        ${{ github.ref == 'refs/heads/alitest' && '--family ipxetest' || '' }}
+    environment: ali-import
+    permissions:
+      id-token: write
+      contents: read
+    steps:
+
+      - name: Check out code
+        uses: actions/checkout@v6
+
+      - name: Download
+        uses: actions/download-artifact@v7
+        with:
+          path: src
+          pattern: "bin-*"
+
+      - name: Log in
+        uses: aliyun/configure-aliyun-credentials-action@v1
+        with:
+          role-to-assume: ${{ vars.ALICLOUD_ROLE }}
+          oidc-provider-arn: ${{ vars.ALICLOUD_IDP }}
+
+      - name: Log in (OSS)
+        run: |
+          cat >> "${GITHUB_ENV}" <<EOF
+          OSS_ACCESS_KEY_ID=${ALIBABA_CLOUD_ACCESS_KEY_ID}
+          OSS_ACCESS_KEY_SECRET=${ALIBABA_CLOUD_ACCESS_KEY_SECRET}
+          OSS_SESSION_TOKEN=${ALIBABA_CLOUD_SECURITY_TOKEN}
+          EOF
+
+      - name: Import
+        working-directory: src
+        run: |
+          ../contrib/cloud/ali-import \
+              --verbose \
+              --public \
+              --overwrite \
+              ${{ env.family }} \
+              ${{ env.binaries }}

src/config/cloud/ali.ipxe

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+#!ipxe
+
+echo Alibaba Cloud ECS - iPXE boot via metadata
+echo CPU: ${cpuvendor} ${cpumodel}
+ifstat ||
+dhcp ||
+route ||
+chain -ar http://100.100.100.200/latest/user-data ||
+ifstat ||