diff --git a/scripts/docker/install-sh-nonroot/Dockerfile b/scripts/docker/install-sh-nonroot/Dockerfile
index ab3f7e9a97ff..faa4ae805aff 100644
--- a/scripts/docker/install-sh-nonroot/Dockerfile
+++ b/scripts/docker/install-sh-nonroot/Dockerfile
@@ -28,7 +28,10 @@ RUN --mount=type=cache,id=openclaw-install-sh-nonroot-apt-cache,target=/var/cach
 RUN --mount=type=cache,id=openclaw-install-sh-nonroot-apt-cache,target=/var/cache/apt,sharing=locked \
   --mount=type=cache,id=openclaw-install-sh-nonroot-apt-lists,target=/var/lib/apt,sharing=locked \
   set -eux; \
-  curl -fsSL https://deb.nodesource.com/setup_24.x | bash -; \
+  installer="$(mktemp)"; \
+  curl -fsSL --connect-timeout 10 --max-time 120 -o "$installer" https://deb.nodesource.com/setup_24.x; \
+  bash "$installer"; \
+  rm -f "$installer"; \
   DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends nodejs
 
 RUN useradd -m -s /bin/bash app \
diff --git a/test/scripts/test-install-sh-docker.test.ts b/test/scripts/test-install-sh-docker.test.ts
index 955316e46299..91994e8a474e 100644
--- a/test/scripts/test-install-sh-docker.test.ts
+++ b/test/scripts/test-install-sh-docker.test.ts
@@ -463,6 +463,13 @@ describe("test-install-sh-docker", () => {
     expect(nonrootDockerfile).toContain("USER app");
     expect(nonrootDockerfile).toContain("WORKDIR /home/app");
     expect(nonrootDockerfile).toContain("NPM_CONFIG_UPDATE_NOTIFIER=false");
+    expect(nonrootDockerfile).toContain('installer="$(mktemp)"');
+    expect(nonrootDockerfile).toContain(
+      'curl -fsSL --connect-timeout 10 --max-time 120 -o "$installer" https://deb.nodesource.com/setup_24.x',
+    );
+    expect(nonrootDockerfile).toContain('bash "$installer"');
+    expect(nonrootDockerfile).toContain('rm -f "$installer"');
+    expect(nonrootDockerfile).not.toMatch(/curl[^\n]+\|\s*bash/u);
   });
 
   it("keeps shared install helpers parsing and verifying installed CLI versions", () => {