Add example with latest version of Node

.github/workflows/example-http-node25-stable.yaml

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+name: examples/http-node25 (stable)
+
+on:
+  workflow_dispatch:
+
+  push:
+    branches: [main]
+    paths:
+    - '.github/workflows/example-http-node25-stable.yaml'
+    - 'http-node25/**'
+    - '!http-node25/README.md'
+
+  pull_request:
+    types: [opened, synchronize, reopened]
+    branches: [main]
+    paths:
+    - '.github/workflows/example-http-node25-stable.yaml'
+    - 'http-node25/**'
+    - '!http-node25/README.md'
+
+  schedule:
+  - cron: '15 15 * * 1-5'
+
+# Automatically cancel in-progress actions on the same branch
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request_target' && github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+env:
+  UKC_METRO: "https://api.${{ vars.UKC_METRO_STABLE }}.unikraft.cloud/v1"
+  UKC_TOKEN: ${{ secrets.UKC_TOKEN }}
+  KRAFTKIT_NO_CHECK_UPDATES: true
+  KRAFTKIT_LOG_LEVEL: debug
+
+jobs:
+  integration:
+    timeout-minutes: 60
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Test
+      id: test
+      uses: unikraft/kraftkit@staging
+      with:
+        run: |
+          set -xe;
+
+          cd http-node25;
+
+          kraft cloud deploy \
+            --no-start \
+            --name http-node25-stable-${GITHUB_RUN_ID} \
+            --runtime index.unikraft.io/official-testing/base-compat:latest \
+            --subdomain http-node25-stable-${GITHUB_RUN_ID} \
+            -p 443:8080 \
+            -M 512 \
+            .;
+
+          # wait for the instance to start
+          kraft cloud vm start -w 5s http-node25-stable-${GITHUB_RUN_ID};
+          sleep 5;
+
+          curl -Lv --fail-with-body --max-time 10 https://http-node25-stable-${GITHUB_RUN_ID}.${{ vars.UKC_METRO_STABLE }}.unikraft.app
+
+    - name: Cleanup
+      uses: unikraft/kraftkit@staging
+      if: always()
+      with:
+        run: |
+          set -xe;
+
+          kraft cloud vm stop http-node25-stable-${GITHUB_RUN_ID} || true;
+          kraft cloud vm logs http-node25-stable-${GITHUB_RUN_ID} || true;
+          kraft cloud vm rm http-node25-stable-${GITHUB_RUN_ID} || true;
+          kraft cloud img rm index.unikraft.io/test/http-node25-stable-${GITHUB_RUN_ID} || true;

.github/workflows/example-http-node25-staging.yaml

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+name: examples/http-node25 (staging)
+
+on:
+  workflow_dispatch:
+
+  push:
+    branches: [main]
+    paths:
+    - '.github/workflows/example-http-node25-staging.yaml'
+    - 'http-node25/**'
+    - '!http-node25/README.md'
+
+  pull_request:
+    types: [opened, synchronize, reopened]
+    branches: [main]
+    paths:
+    - '.github/workflows/example-http-node25-staging.yaml'
+    - 'http-node25/**'
+    - '!http-node25/README.md'
+
+  schedule:
+  - cron: '15 15 * * 1-5'
+
+# Automatically cancel in-progress actions on the same branch
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request_target' && github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+env:
+  UKC_METRO: "https://api.${{ vars.UKC_METRO_STAGING }}.unikraft.cloud/v1"
+  UKC_TOKEN: ${{ secrets.UKC_TOKEN }}
+  KRAFTKIT_NO_CHECK_UPDATES: true
+  KRAFTKIT_LOG_LEVEL: debug
+
+jobs:
+  integration:
+    timeout-minutes: 60
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Test
+      id: test
+      uses: unikraft/kraftkit@staging
+      with:
+        run: |
+          set -xe;
+
+          cd http-node25;
+
+          kraft cloud deploy \
+            --no-start \
+            --name http-node25-staging-${GITHUB_RUN_ID} \
+            --runtime index.unikraft.io/official-staging/base-compat:latest \
+            --subdomain http-node25-staging-${GITHUB_RUN_ID} \
+            -p 443:8080 \
+            -M 512 \
+            .;
+
+          # wait for the instance to start
+          kraft cloud vm start -w 5s http-node25-staging-${GITHUB_RUN_ID};
+          sleep 5;
+
+          curl -Lv --fail-with-body --max-time 10 https://http-node25-staging-${GITHUB_RUN_ID}.${{ vars.UKC_METRO_STAGING }}.unikraft.app
+
+    - name: Cleanup
+      uses: unikraft/kraftkit@staging
+      if: always()
+      with:
+        run: |
+          set -xe;
+
+          kraft cloud vm stop http-node25-staging-${GITHUB_RUN_ID} || true;
+          kraft cloud vm logs http-node25-staging-${GITHUB_RUN_ID} || true;
+          kraft cloud vm rm http-node25-staging-${GITHUB_RUN_ID} || true;
+          kraft cloud img rm index.unikraft.io/test/http-node25-staging-${GITHUB_RUN_ID} || true;

http-node25/Dockerfile

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+FROM node:25-alpine AS node
+
+FROM scratch
+
+# Node binary
+COPY --from=node /usr/local/bin/node /usr/bin/node
+
+# System libraries
+COPY --from=node /lib/ld-musl-x86_64.so.1 /lib/ld-musl-x86_64.so.1
+COPY --from=node /usr/lib/libgcc_s.so.1 /usr/lib/libgcc_s.so.1
+COPY --from=node /usr/lib/libstdc++.so.6 /usr/lib/libstdc++.so.6
+
+# Node HTTP server
+COPY ./server.js /usr/src/server.js

http-node25/Kraftfile

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+spec: v0.6
+
+runtime: base-compat:latest
+
+labels:
+  cloud.unikraft.v1.instances/scale_to_zero.policy: "on"
+  cloud.unikraft.v1.instances/scale_to_zero.stateful: "false"
+  cloud.unikraft.v1.instances/scale_to_zero.cooldown_time_ms: 1000
+
+rootfs: ./Dockerfile
+
+cmd: ["/usr/bin/node", "/usr/src/server.js"]

http-node25/README.md

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+# Node 25
+
+[Node,js](https://nodejs.org) is a free, open-source, cross-platform JavaScript runtime environment.
+
+To run Node.js on Unikraft Cloud, first [install the `kraft` CLI tool](https://unikraft.org/docs/cli).
+Then clone this examples repository and `cd` into this directory, and invoke:
+
+```console
+kraft cloud deploy --metro fra -p 443:8080 -M 512 .
+```
+
+The command will deploy the `server.js` file.
+
+After deploying, you can query the service using the provided URL.
+
+## Learn more
+
+- [Node.js's Documentation](https://nodejs.org/docs/latest/api/)
+- [Unikraft Cloud's Documentation](https://unikraft.cloud/docs/)
+- [Building `Dockerfile` Images with `Buildkit`](https://unikraft.org/guides/building-dockerfile-images-with-buildkit)

http-node25/server.js

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+const http = require('http'); // Loads the http module
+
+http.createServer((request, response) => {
+
+    // 1. Tell the browser everything is OK (Status code 200), and the data is in plain text
+    response.writeHead(200, {
+        'Content-Type': 'text/plain'
+    });
+
+    // 2. Write the announced text to the body of the page
+    response.write('Hello, World!\n');
+
+    // 3. Tell the server that all of the response headers and body have been sent
+    response.end();
+
+}).listen(8080); // 4. Tells the server what port to be on