ci: build multiarched docker images

Signed-off-by: You-Sheng Yang <[email protected]>

.github/workflows/ci.yml

@@ -0,0 +1,50 @@
+name: Container Images
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  matrix:
+    name: Build Matrix
+    runs-on: ubuntu-latest
+    outputs:
+      full_json: ${{ steps.releases.outputs.json }}
+      codename_arch" ${{ steps.releases.outputs.codename_arch }}
+    steps:
+      - name: Releases Info
+        id: releases
+        use: vicamo/actions-library/debian-releases@v1
+      - name: Extract codename/arch
+        env:
+          FULL_JSON: ${{ steps.releases.outputs.json }}
+        run: |
+          json="$(echo "${FULL_JSON}" | \
+              jq -c -M '[ .[] as $s | $s.architectures[] | {"codename":$s.codename,"suite":$s.suite,"arch":.} ]')"
+          echo "::group::Built JSON"
+          echo "${json}" | jq
+          echo "::endgroup::"
+
+          echo "codename_arch=${json}" | tee -a "${GITHUB_OUTPUT}"
+
+  container-tarball:
+    name: Container Tarballs
+    runs-on: ubuntu-latest
+    needs:
+      - matrix
+    strategy:
+      matrix:
+        include: ${{ fromJSON(needs.matrix.outputs.codename_arch) }}
+    steps:
+      - run: echo "true"