ci: update Test Docker images build workflow with multi platform images support

Author: dlachaume

.github/workflows/test-client.yml

@@ -163,7 +163,7 @@ jobs:
         run: ./mithril-client ${{ steps.prepare.outputs.debug_level }} --origin-tag CI cardano-db download $CDB_SNAPSHOT_DIGEST --backend v1 ${{ matrix.extra_args }} 2>&1 | tee cdb-download-output.txt
 
       - name: Cardano Database Snapshot / verify Cardano node starts successfully
-        if: runner.os == 'Linux'
+        if: matrix.os == 'ubuntu-24.04'
         shell: bash
         run: .github/workflows/scripts/verify-cardano-db-restoration.sh ./bin/cdb-download-output.txt "${{ matrix.extra_args }}"
 

.github/workflows/test-docker-distribution.yml

@@ -73,11 +73,26 @@ jobs:
         run: |
           git checkout ${{ inputs.commit_sha }}
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Download built artifacts (Linux-x64)
         uses: dawidd6/action-download-artifact@v6
         with:
           name: mithril-distribution-Linux-X64
-          path: ${{ matrix.project }}
+          path: ${{ matrix.project }}/bin-linux-amd64
+          commit: ${{ inputs.commit_sha }}
+          workflow: ci.yml
+          workflow_conclusion: completed
+
+      - name: Download built artifacts (Linux-ARM64)
+        uses: dawidd6/action-download-artifact@v6
+        with:
+          name: mithril-distribution-Linux-ARM64
+          path: ${{ matrix.project }}/bin-linux-arm64
           commit: ${{ inputs.commit_sha }}
           workflow: ci.yml
           workflow_conclusion: completed
@@ -108,3 +123,4 @@ jobs:
             CARDANO_BIN_URL=${{ inputs.cardano_bin_url }}
           push: ${{ inputs.dry_run == false }}
           tags: ${{ steps.meta.outputs.tags }}
+          platforms: linux/amd64,linux/arm64