diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index e053438..0b938a1 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -70,13 +70,26 @@ jobs:
 
       #-------------------------------------------------------------------
       # Build project + unit test + startup smoke test (inside arm64)
+      # NOTE: the runner runs inside a container, so the workspace path is
+      #       not a host path -> `-v` mounts don't work. Use `docker cp`
+      #       (streams files through the docker socket) instead.
       #-------------------------------------------------------------------
       - name: Build & test inside arm64 container
         timeout-minutes: 30
         run: |
-          docker run --rm \
-            -v "$GITHUB_WORKSPACE:/src" \
-            "$CI_IMAGE" /src/ci/build-test.sh
+          set -euo pipefail
+          CID="h100-ci-test"
+          docker rm -f "$CID" >/dev/null 2>&1 || true
+          docker create --name "$CID" --platform linux/arm64 "$CI_IMAGE" /bin/sh -c 'sleep 7200' >/dev/null
+          docker cp "$PWD/." "$CID:/src/"
+          docker start "$CID" >/dev/null
+          docker exec "$CID" /src/ci/build-test.sh
+          mkdir -p bin
+          docker cp "$CID:/src/bin/pPowerManger" bin/pPowerManger
+          docker cp "$CID:/src/bin/pPMtest" bin/pPMtest
+          docker cp "$CID:/src/bin/SQLiteTest" bin/SQLiteTest
+          docker rm -f "$CID" >/dev/null 2>&1 || true
+          ls -la bin/
 
       #-------------------------------------------------------------------
       # Deploy the cross-built binary to the RK3588 board (push only)