docker : prebuild web UI for s390x build [no release] (#24829)

.devops/s390x.Dockerfile

@@ -4,20 +4,6 @@ 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
-
 ### Build Llama.cpp stage
 FROM docker.io/gcc:${GCC_VERSION} AS build
 
@@ -34,8 +20,6 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 WORKDIR /app
 COPY . .
 
-COPY --from=web /app/tools/ui/dist tools/ui/dist
-
 RUN --mount=type=cache,target=/root/.ccache \
     --mount=type=cache,target=/app/build \
     cmake -S . -B build -G Ninja \