docker : build the UI (#24794)

* docker : build the UI

* cont : use existing APP_VERSION

.devops/cpu.Dockerfile

@@ -3,6 +3,20 @@ ARG BUILD_DATE=N/A
 ARG APP_VERSION=N/A
 ARG APP_REVISION=N/A
 
+ARG NODE_VERSION=24
+
+FROM docker.io/node:$NODE_VERSION AS web
+
+ARG APP_VERSION
+
+WORKDIR /app/tools/ui
+
+COPY tools/ui/package.json tools/ui/package-lock.json ./
+RUN npm ci
+
+COPY tools/ui/ ./
+RUN LLAMA_BUILD_NUMBER="$APP_VERSION" npm run build
+
 FROM docker.io/ubuntu:$UBUNTU_VERSION AS build
 
 ARG TARGETARCH
@@ -16,6 +30,8 @@ WORKDIR /app
 
 COPY . .
 
+COPY --from=web /app/tools/ui/dist tools/ui/dist
+
 RUN if [ "$TARGETARCH" = "amd64" ] || [ "$TARGETARCH" = "arm64" ]; then \
         cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DGGML_NATIVE=OFF -DLLAMA_BUILD_TESTS=OFF -DGGML_BACKEND_DL=ON -DGGML_CPU_ALL_VARIANTS=ON; \
     else \