diff --git a/.gitea/docker/Dockerfile.ci-cpp b/.gitea/docker/Dockerfile.ci-cpp
index e260036..1fa81a3 100644
--- a/.gitea/docker/Dockerfile.ci-cpp
+++ b/.gitea/docker/Dockerfile.ci-cpp
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04
+FROM --platform=linux/arm64 ubuntu:22.04
 
 # Node.js 20 from NodeSource (Ubuntu Jammy ships v12 which is too old
 # for actions/checkout@v4 — static class blocks require Node.js >= 16).
diff --git a/.gitea/workflows/cpp-tests.yml b/.gitea/workflows/cpp-tests.yml
index 722093a..ab9563d 100644
--- a/.gitea/workflows/cpp-tests.yml
+++ b/.gitea/workflows/cpp-tests.yml
@@ -11,12 +11,17 @@ on:
 jobs:
   test:
     runs-on: eulernest
-    container:
-      image: git.eulernest.eu/conformallab/ci-cpp:latest
+    # container image intentionally omitted until ci-cpp:latest is
+    # rebuilt for linux/arm64 and pushed to git.eulernest.eu
 
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install build tools
+        run: |
+          sudo apt-get update -qq
+          sudo apt-get install -y --no-install-recommends cmake g++ git ca-certificates
+
       - name: Configure (tests-only mode)
         run: cmake -S code -B build -DCMAKE_BUILD_TYPE=Release
 
@@ -33,10 +38,9 @@ jobs:
         if: always()
         run: |
           if [ -f test-results.xml ]; then
-            total=$(grep -o 'tests="[0-9]*"'    test-results.xml | grep -o '[0-9]*' | head -1)
+            total=$(grep -o 'tests="[0-9]*"'     test-results.xml | grep -o '[0-9]*' | head -1)
             failed=$(grep -o 'failures="[0-9]*"' test-results.xml | grep -o '[0-9]*' | head -1)
             skipped=$(grep -o 'skipped="[0-9]*"' test-results.xml | grep -o '[0-9]*' | head -1)
             passed=$(( ${total:-0} - ${failed:-0} - ${skipped:-0} ))
-            echo ""
             echo "TOTAL: ${total:-0} | PASSED: $passed | FAILED: ${failed:-0} | SKIPPED: ${skipped:-0}"
           fi