[ci skip] migrate CI to namespace 🚀

.github/workflows/build.yml

@@ -9,18 +9,19 @@ on:
       - master
 jobs:
   build:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        java: [17, 21]
-      fail-fast: true
+    runs-on: namespace-profile-linux-default
     steps:
-      - uses: actions/checkout@v4
-      - name: Install Java ${{ matrix.java }}
+      - uses: namespacelabs/nscloud-checkout-action@v9
+      - name: Install Java
         uses: actions/setup-java@v3
         with:
-          java-version: ${{ matrix.java }}
+          java-version: 21
           distribution: 'zulu'
+          cache: "" # namespace handles this
+      - name: Set up maven cache
+        uses: namespacelabs/nscloud-cache-action@v1
+        with:
+          cache: maven
       - name: patch
         run: |
           git config --global user.email "no-reply@github.com"

README.md

@@ -83,3 +83,5 @@ Clone this repo, run `./waterfall b` from *bash*, get jar from Waterfall-Proxy/b
 ![YourKit-Logo](https://yourkit.com/images/yklogo.png)
 
 [YourKit](https://yourkit.com/), makers of the outstanding Java profiler, supports open source projects of all kinds with their full-featured [Java](https://yourkit.com/features/) and [.NET](https://yourkit.com/dotnet/features/) application profilers. We thank them for granting Waterfall an OSS license so that we can make our software the best it can be.
+
+<img src="https://papermc.io/assets/misc/namespace-oss-badge.svg?project=waterfall" alt="CI powered by namespace badge" />