diff --git a/.github/workflows/docker-release.yml b/.github/workflows/docker-release.yml
index 2cfbdb0..ebff621 100644
--- a/.github/workflows/docker-release.yml
+++ b/.github/workflows/docker-release.yml
@@ -10,6 +10,7 @@ on:
       - 'Dockerfile'
       - 'Dockerfile.alpine'
       - 'OPENCLAW_VERSION'
+      - 'scripts/install-openclaw.sh'
       - '.github/workflows/docker-release.yml'
   pull_request:
     branches:
@@ -17,6 +18,7 @@ on:
     paths:
       - 'Dockerfile'
       - 'Dockerfile.alpine'
+      - 'scripts/install-openclaw.sh'
       - '.github/workflows/docker-release.yml'
   workflow_dispatch:
 
diff --git a/Dockerfile b/Dockerfile
index cce13f4..4e26e86 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,28 +7,8 @@ RUN apt-get update && apt-get install -y \
 WORKDIR /build
 
 COPY OPENCLAW_VERSION /tmp/OPENCLAW_VERSION
+COPY scripts/install-openclaw.sh /usr/local/bin/install-openclaw
 
 # Install openclaw globally, and backfill Control UI assets if upstream npm
 # package omitted dist/control-ui for this version.
-RUN set -eux; \
-    OPENCLAW_VERSION="$(tr -d '[:space:]' < /tmp/OPENCLAW_VERSION)"; \
-    npm install -g "openclaw@${OPENCLAW_VERSION}"; \
-    OPENCLAW_ROOT="$(npm root -g)/openclaw"; \
-    CONTROL_UI_INDEX="${OPENCLAW_ROOT}/dist/control-ui/index.html"; \
-    if [ ! -f "${CONTROL_UI_INDEX}" ]; then \
-      echo "Control UI assets missing in openclaw@${OPENCLAW_VERSION}; building from source tag."; \
-      corepack enable; \
-      corepack prepare pnpm@10.23.0 --activate; \
-      rm -rf /tmp/openclaw-src; \
-      if ! git clone --depth 1 --branch "v${OPENCLAW_VERSION}" https://github.com/openclaw/openclaw.git /tmp/openclaw-src; then \
-        git clone --depth 1 --branch "v${OPENCLAW_VERSION}-1" https://github.com/openclaw/openclaw.git /tmp/openclaw-src; \
-      fi; \
-      cd /tmp/openclaw-src; \
-      CI=true pnpm --dir ui install --prod=false; \
-      pnpm --dir ui build; \
-      mkdir -p "${OPENCLAW_ROOT}/dist"; \
-      rm -rf "${OPENCLAW_ROOT}/dist/control-ui"; \
-      cp -R dist/control-ui "${OPENCLAW_ROOT}/dist/control-ui"; \
-      test -f "${CONTROL_UI_INDEX}"; \
-      rm -rf /tmp/openclaw-src /root/.local/share/pnpm /root/.cache/pnpm /root/.cache/node/corepack; \
-    fi
+RUN sh /usr/local/bin/install-openclaw
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index 5a2c56a..9e37a11 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -10,28 +10,8 @@ RUN apk add --no-cache \
 WORKDIR /build
 
 COPY OPENCLAW_VERSION /tmp/OPENCLAW_VERSION
+COPY scripts/install-openclaw.sh /usr/local/bin/install-openclaw
 
 # Install openclaw globally, and backfill Control UI assets if upstream npm
 # package omitted dist/control-ui for this version.
-RUN set -eux; \
-    OPENCLAW_VERSION="$(tr -d '[:space:]' < /tmp/OPENCLAW_VERSION)"; \
-    npm install -g "openclaw@${OPENCLAW_VERSION}"; \
-    OPENCLAW_ROOT="$(npm root -g)/openclaw"; \
-    CONTROL_UI_INDEX="${OPENCLAW_ROOT}/dist/control-ui/index.html"; \
-    if [ ! -f "${CONTROL_UI_INDEX}" ]; then \
-      echo "Control UI assets missing in openclaw@${OPENCLAW_VERSION}; building from source tag."; \
-      corepack enable; \
-      corepack prepare pnpm@10.23.0 --activate; \
-      rm -rf /tmp/openclaw-src; \
-      if ! git clone --depth 1 --branch "v${OPENCLAW_VERSION}" https://github.com/openclaw/openclaw.git /tmp/openclaw-src; then \
-        git clone --depth 1 --branch "v${OPENCLAW_VERSION}-1" https://github.com/openclaw/openclaw.git /tmp/openclaw-src; \
-      fi; \
-      cd /tmp/openclaw-src; \
-      CI=true pnpm --dir ui install --prod=false; \
-      pnpm --dir ui build; \
-      mkdir -p "${OPENCLAW_ROOT}/dist"; \
-      rm -rf "${OPENCLAW_ROOT}/dist/control-ui"; \
-      cp -R dist/control-ui "${OPENCLAW_ROOT}/dist/control-ui"; \
-      test -f "${CONTROL_UI_INDEX}"; \
-      rm -rf /tmp/openclaw-src /root/.local/share/pnpm /root/.cache/pnpm /root/.cache/node/corepack; \
-    fi
+RUN sh /usr/local/bin/install-openclaw
diff --git a/README.md b/README.md
index e4c117b..5e3caef 100644
--- a/README.md
+++ b/README.md
@@ -89,6 +89,7 @@ The main files to edit are:
 - `OPENCLAW_VERSION` (single source of truth for the openclaw npm version)
 - `Dockerfile`
 - `Dockerfile.alpine`
+- `scripts/install-openclaw.sh` (shared openclaw install and Control UI backfill logic)
 
 Common changes include:
 - Bumping the `OPENCLAW_VERSION` to a newer npm release
diff --git a/scripts/install-openclaw.sh b/scripts/install-openclaw.sh
new file mode 100644
index 0000000..ae8b007
--- /dev/null
+++ b/scripts/install-openclaw.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+set -eux
+
+OPENCLAW_VERSION="$(tr -d '[:space:]' < /tmp/OPENCLAW_VERSION)"
+npm install -g "openclaw@${OPENCLAW_VERSION}"
+
+OPENCLAW_ROOT="$(npm root -g)/openclaw"
+CONTROL_UI_INDEX="${OPENCLAW_ROOT}/dist/control-ui/index.html"
+
+if [ ! -f "${CONTROL_UI_INDEX}" ]; then
+  echo "Control UI assets missing in openclaw@${OPENCLAW_VERSION}; building from source tag."
+  corepack enable
+  corepack prepare pnpm@10.23.0 --activate
+  rm -rf /tmp/openclaw-src
+  if ! git clone --depth 1 --branch "v${OPENCLAW_VERSION}" https://github.com/openclaw/openclaw.git /tmp/openclaw-src; then
+    git clone --depth 1 --branch "v${OPENCLAW_VERSION}-1" https://github.com/openclaw/openclaw.git /tmp/openclaw-src
+  fi
+  cd /tmp/openclaw-src
+  CI=true pnpm --dir ui install --prod=false
+  pnpm --dir ui build
+  mkdir -p "${OPENCLAW_ROOT}/dist"
+  rm -rf "${OPENCLAW_ROOT}/dist/control-ui"
+  cp -R dist/control-ui "${OPENCLAW_ROOT}/dist/control-ui"
+  test -f "${CONTROL_UI_INDEX}"
+  rm -rf /tmp/openclaw-src /root/.local/share/pnpm /root/.cache/pnpm /root/.cache/node/corepack
+fi