feat: let the bare-metal cell run the eks suite

The eks suite boots its control plane from the eks-node AMI, which only
the nightly built. Bare metal had no EKS or mkosi step at all, so naming
the suite there produced a run that could never pass.

.github/workflows/e2e-baremetal.yml

@@ -158,6 +158,20 @@ jobs:
       - name: Install go-junit-report on runner
         run: go install github.com/jstemmer/go-junit-report/v2@latest
 
+      # The eks suite's CreateCluster boots a control-plane VM from the eks-node
+      # AMI. Built here because libguestfs needs source and network, which the
+      # runner has and the PXE-booted node does not; bm-bootstrap.sh imports it.
+      - name: Build eks-node AMI (libguestfs, runner)
+        if: contains(inputs.suites, 'eks')
+        working-directory: spinifex
+        run: |
+          set -euo pipefail
+          # direct backend = no libvirt. Set here rather than in the script:
+          # it has to be in the environment the build itself runs in.
+          export LIBGUESTFS_BACKEND=direct
+          "${GITHUB_WORKSPACE}/spinifex/.github/scripts/ensure-libguestfs.sh"
+          make build-eks-node-image
+
       - name: Run Bare-Metal E2E
         env:
           BM_CI_PASSWORD: ${{ secrets.BM_CI_PASSWORD }}
@@ -167,6 +181,10 @@ jobs:
           SPX_EXTERNAL_POOL: ${{ env.SPINIFEX_CI_POOL }}
           BM_SUITES: ${{ inputs.suites || 'single cert lb' }}
           BM_SUITE_ENV: ${{ inputs.suite-env }}
+          # Empty unless the eks build above ran, and bm-bootstrap.sh skips the
+          # import when unset, so the other suites are unaffected.
+          BM_EKS_IMAGE: ${{ contains(inputs.suites, 'eks') && '/tmp/eks-node-image-build/eks-node-alpine.raw' || '' }}
+          BM_EKS_MANIFEST: ${{ contains(inputs.suites, 'eks') && format('{0}/spinifex/scripts/images/eks-node/manifest.conf', github.workspace) || '' }}
         run: |
           mkdir -p "${ARTIFACT_DIR}"
           set -o pipefail