Add README with usage and release workflow instructions
Assisted-by: Claude (Sonnet 4)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..a345615
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+# Docker Soju
+
+Docker image for [soju](https://soju.im) IRC bouncer.
+
+## Usage
+
+```bash
+docker run -d --name soju ghcr.io/kejadlen/soju:latest
+```
+
+## Creating Images for New Releases
+
+1. Go to the [Actions tab](../../actions/workflows/build.yml)
+2. Click "Run workflow"
+3. Enter the soju version (e.g., `0.8.2`)
+4. Click "Run workflow"
+
+This will automatically build and publish the Docker image to
+`ghcr.io/kejadlen/soju` with the specified version tag.