diff --git a/.github/workflows/push_image_next.yml b/.github/workflows/push_image_next.yml
index 0afe2b017..66d1925ad 100644
--- a/.github/workflows/push_image_next.yml
+++ b/.github/workflows/push_image_next.yml
@@ -13,6 +13,32 @@ on:
         default: "next"
 
 jobs:
+  prepare-ui:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22.19.0
+
+      - name: Build UI
+        run: |
+          echo "VITE_APP_VERSION=${GITHUB_REF#refs/tags/}" > ./ui/.env
+          npm --prefix=./ui ci
+          npm --prefix=./ui run build
+
+      - name: Upload UI build artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: ui-build
+          path: ./ui/dist
+          retention-days: 1
+
   build-and-push:
     runs-on: ubuntu-latest
 
@@ -55,11 +81,17 @@ jobs:
         run: |
           echo "VITE_APP_VERSION=${GITHUB_REF#refs/tags/}" > ./ui/.env
 
+      - name: Download UI build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: ui-build
+          path: ./ui/dist
+
       - name: Build and push Docker image
         uses: docker/build-push-action@v6
         with:
           context: .
-          file: ./Dockerfile
+          file: ./Dockerfile.gh
           platforms: linux/amd64,linux/arm64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c88751c86..d3ef2cc90 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20.11.0
+          node-version: 22.19.0
 
       - name: Build UI
         run: |
diff --git a/Dockerfile b/Dockerfile
index 6f0f709bb..6485e54ed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ RUN \
 
 
 
-FROM golang:1.24-alpine AS builder
+FROM golang:1.24-alpine AS server-builder
 WORKDIR /app
 COPY ../. /app/
 RUN rm -rf /app/ui/dist
@@ -20,5 +20,5 @@ RUN go build -ldflags="-s -w" -o certimate
 
 FROM alpine:latest
 WORKDIR /app
-COPY --from=builder /app/certimate .
+COPY --from=server-builder /app/certimate .
 ENTRYPOINT ["./certimate", "serve", "--http", "0.0.0.0:8090"]
diff --git a/Dockerfile.gh b/Dockerfile.gh
new file mode 100644
index 000000000..0f1b7bc31
--- /dev/null
+++ b/Dockerfile.gh
@@ -0,0 +1,16 @@
+# Build docker image on GitHub Actions runner is too slow,
+# and it doesn't support armv7 (see https://github.com/parcel-bundler/lightningcss/issues/988).
+# So we pre-build webui, and just use simple Dockerfile here.
+
+FROM golang:1.24-alpine AS server-builder
+WORKDIR /app
+COPY ../. /app/
+ENV CGO_ENABLED=0
+RUN go build -ldflags="-s -w" -o certimate
+
+
+
+FROM alpine:latest
+WORKDIR /app
+COPY --from=server-builder /app/certimate .
+ENTRYPOINT ["./certimate", "serve", "--http", "0.0.0.0:8090"]