diff --git a/integration-test/docker-compose.yml b/integration-test/docker-compose.yml
index 3d66cc7..325fe3a 100644
--- a/integration-test/docker-compose.yml
+++ b/integration-test/docker-compose.yml
@@ -1,5 +1,6 @@
 services:
   vibe-app:
+    image: vibe-app-integration
     build:
       context: ..
       dockerfile: Dockerfile
diff --git a/script/integration-test b/script/integration-test
index a4af130..7d2adc4 100755
--- a/script/integration-test
+++ b/script/integration-test
@@ -50,10 +50,14 @@ trap teardown EXIT
 trap 'exit 130' INT
 trap 'exit 143' TERM
 
-# Build vibe-app explicitly: `run --build integration-test` only builds the named service
-# (not its dependencies), and integration-test is image-only, so compose hands bake an
-# empty definition ("failed to find target default") and vibe-app never gets built or started.
-"${compose[@]}" --ansi never --progress plain build vibe-app
+# Build the app image with buildx directly instead of through compose: compose delegates
+# builds to bake, which fails on the CI runner with "failed to find target default". The
+# image name matches `image:` in docker-compose.yml, so `run` below finds it and never
+# builds. DEPS_ALIASES must match build.args in docker-compose.coverage.yml.
+docker buildx build --load \
+  --build-arg "DEPS_ALIASES=run${COVERAGE:+:cov}" \
+  -t vibe-app-integration \
+  -f "$root/Dockerfile" "$root"
 
 # `run` returns the test container's own exit code; `up --abort-on-container-exit` can leak
 # the app's SIGTERM exit (143) during teardown instead.