diff --git a/scripts/e2e/browser-cdp-snapshot-docker.sh b/scripts/e2e/browser-cdp-snapshot-docker.sh
index 62bc9174c6e..07e0c4b6721 100755
--- a/scripts/e2e/browser-cdp-snapshot-docker.sh
+++ b/scripts/e2e/browser-cdp-snapshot-docker.sh
@@ -5,7 +5,16 @@ ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 source "$ROOT_DIR/scripts/lib/docker-e2e-image.sh"
 
 BASE_IMAGE="$(docker_e2e_resolve_image "openclaw-browser-cdp-base-e2e" OPENCLAW_BROWSER_CDP_BASE_E2E_IMAGE)"
-IMAGE_NAME="$(docker_e2e_resolve_image "openclaw-browser-cdp-snapshot-e2e" OPENCLAW_BROWSER_CDP_SNAPSHOT_E2E_IMAGE)"
+if [ -n "${OPENCLAW_BROWSER_CDP_SNAPSHOT_E2E_IMAGE:-}" ]; then
+  IMAGE_NAME="$OPENCLAW_BROWSER_CDP_SNAPSHOT_E2E_IMAGE"
+  DERIVED_SHARED_IMAGE="0"
+elif [ -n "${OPENCLAW_DOCKER_E2E_IMAGE:-}" ]; then
+  IMAGE_NAME="openclaw-browser-cdp-snapshot-e2e:${OPENCLAW_DOCKER_ALL_LANE_NAME:-shared}"
+  DERIVED_SHARED_IMAGE="1"
+else
+  IMAGE_NAME="openclaw-browser-cdp-snapshot-e2e"
+  DERIVED_SHARED_IMAGE="0"
+fi
 SKIP_BUILD="${OPENCLAW_BROWSER_CDP_SNAPSHOT_E2E_SKIP_BUILD:-0}"
 PORT="18789"
 CDP_PORT="19222"
@@ -19,7 +28,9 @@ cleanup() {
 }
 trap cleanup EXIT
 
-if [ "${OPENCLAW_SKIP_DOCKER_BUILD:-0}" = "1" ] || [ "$SKIP_BUILD" = "1" ]; then
+# Targeted Docker runs reuse the shared functional image as the base, but this
+# lane still needs a derived image with Chromium installed.
+if [ "$SKIP_BUILD" = "1" ] || { [ "$DERIVED_SHARED_IMAGE" = "0" ] && [ "${OPENCLAW_SKIP_DOCKER_BUILD:-0}" = "1" ]; }; then
   echo "Reusing Docker image: $IMAGE_NAME"
   docker_e2e_docker_cmd image inspect "$IMAGE_NAME" >/dev/null
 else
@@ -82,7 +93,7 @@ if ! docker_e2e_wait_container_bash "$CONTAINER_NAME" 180 0.5 "
 fi
 
 echo "Running browser CDP snapshot smoke..."
-docker_e2e_docker_cmd exec "$CONTAINER_NAME" bash -lc "
+if ! docker_e2e_docker_cmd exec "$CONTAINER_NAME" bash -lc "
 set -euo pipefail
 source /tmp/openclaw-test-state-env
 source scripts/lib/openclaw-e2e-instance.sh
@@ -93,6 +104,10 @@ grep -q 'OK live-snapshot' /tmp/browser-cdp-doctor.txt
 node \"\$entry\" browser \"\${base_args[@]}\" --browser-profile docker-cdp open http://127.0.0.1:$FIXTURE_PORT/ >/tmp/browser-cdp-open.txt
 node \"\$entry\" browser \"\${base_args[@]}\" --browser-profile docker-cdp snapshot --interactive --urls --out /tmp/browser-cdp-snapshot.txt >/tmp/browser-cdp-snapshot.out
 node scripts/e2e/lib/browser-cdp-snapshot/assert-snapshot.mjs /tmp/browser-cdp-snapshot.txt
-"
+"; then
+  echo "Browser CDP snapshot smoke failed"
+  docker_e2e_tail_container_file_if_running "$CONTAINER_NAME" "/tmp/browser-cdp-doctor.txt /tmp/browser-cdp-open.txt /tmp/browser-cdp-snapshot.out /tmp/browser-cdp-snapshot.txt /tmp/browser-cdp-chromium.log /tmp/browser-cdp-gateway.log /tmp/browser-cdp-fixture.log" 200
+  exit 1
+fi
 
 echo "Browser CDP snapshot Docker E2E passed."
diff --git a/test/scripts/docker-build-helper.test.ts b/test/scripts/docker-build-helper.test.ts
index 7d46b35a296..965f9de0553 100644
--- a/test/scripts/docker-build-helper.test.ts
+++ b/test/scripts/docker-build-helper.test.ts
@@ -759,6 +759,94 @@ grep -q '^pull openclaw-reuse-image$' "$TMPDIR/docker-seen"
     }
   });
 
+  it("derives the browser CDP image from the shared functional image", () => {
+    const workDir = mkdtempSync(join(tmpdir(), "openclaw-browser-cdp-shared-image-"));
+
+    try {
+      const rootDir = process.cwd();
+      mkdirSync(join(workDir, "bin"));
+      writeFileSync(
+        join(workDir, "bin", "docker"),
+        `#!/usr/bin/env bash
+printf "%s\\n" "$*" >>"$TMPDIR/docker-seen"
+case "$1 $2" in
+  "image inspect")
+    exit 0
+    ;;
+  "inspect -f")
+    printf "true\\n"
+    exit 0
+    ;;
+  "rm -f")
+    exit 0
+    ;;
+  "run "*)
+    printf "container-id\\n"
+    exit 0
+    ;;
+  "exec "*)
+    exit 0
+    ;;
+esac
+case "$1" in
+  build)
+    exit 0
+    ;;
+esac
+exit 9
+`,
+      );
+      writeFileSync(
+        join(workDir, "bin", "node"),
+        `#!/usr/bin/env bash
+printf "echo state\\n"
+`,
+      );
+      writeFileSync(
+        join(workDir, "bin", "timeout"),
+        `#!/usr/bin/env bash
+case "\${1:-}" in
+  --kill-after=1s | --kill-after=30s)
+    shift 2
+    ;;
+  *)
+    shift
+    ;;
+esac
+exec "$@"
+`,
+      );
+      chmodSync(join(workDir, "bin", "docker"), 0o755);
+      chmodSync(join(workDir, "bin", "node"), 0o755);
+      chmodSync(join(workDir, "bin", "timeout"), 0o755);
+
+      const script = `
+set -euo pipefail
+ROOT_DIR=${shellQuote(rootDir)}
+TMPDIR=${shellQuote(workDir)}
+export ROOT_DIR TMPDIR
+export PATH="$TMPDIR/bin:$PATH"
+export OPENCLAW_SKIP_DOCKER_BUILD=1
+export OPENCLAW_DOCKER_E2E_IMAGE=shared-functional
+export OPENCLAW_DOCKER_ALL_LANE_NAME=browser-cdp-snapshot
+
+bash "$ROOT_DIR/scripts/e2e/browser-cdp-snapshot-docker.sh"
+
+grep -q '^image inspect shared-functional$' "$TMPDIR/docker-seen"
+grep -Fq 'build -t openclaw-browser-cdp-snapshot-e2e:browser-cdp-snapshot' "$TMPDIR/docker-seen"
+grep -Fq ' openclaw-browser-cdp-snapshot-e2e:browser-cdp-snapshot ' "$TMPDIR/docker-seen"
+if grep -Fq ' shared-functional ' "$TMPDIR/docker-seen"; then
+  echo "browser CDP lane reused the shared image without Chromium" >&2
+  exit 1
+fi
+`;
+
+      execFileSync("bash", ["-lc", script], { encoding: "utf8" });
+    } finally {
+      rmSync(workDir, { recursive: true, force: true });
+    }
+  });
+
   it("fails Docker commands fast when timeout is unavailable", () => {
     const workDir = mkdtempSync(join(tmpdir(), "openclaw-docker-timeout-required-"));