Updated README

README.md

@@ -1,5 +1,41 @@
-# Swift + Node.js Docker Image
+# Swift CI
 
-A minimal CI image based on the official Swift Docker image.
+A small Docker image for running Swift CI workflows with Node.js support.
 
-Currently mirrors **Swift 6.3.3** and adds **Node.js 24 LTS** for CI workflows that require Node.js, such as repository checkout actions.
+The image is based on the official Swift Docker image and adds Node.js 24 LTS for CI tools and actions that require it, such as repository checkout actions.
+
+## Included
+
+- Swift 6.3.3
+- Node.js 24 LTS
+- Git
+- cURL
+- CA certificates
+
+## Usage
+
+Use the image as the container for a CI job:
+
+```yaml
+jobs:
+  build:
+    runs-on: docker_runner
+    container:
+      image: git.omgitsalexl.me/omgitsalexl/ci-swift:latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build
+        run: swift build -c release
+```
+
+You can also use it directly with Docker:
+
+```bash
+docker run --rm -it git.omgitsalexl.me/omgitsalexl/ci-swift:latest swift --version
+```
+
+## Purpose
+
+The official Swift image does not include Node.js. This image adds it so Node-based CI actions can run while keeping the rest of the environment close to the standard Swift container.