Add Docker image support

README.md

@@ -76,6 +76,31 @@ Gradio provides a local browser UI for starting dub jobs, watching logs, and dow
 
 Open `http://127.0.0.1:7860` and submit a YouTube URL. Jobs run through the same `main.py` pipeline, so the CLI options and environment variables still apply.
 
+### Docker
+
+Build and run the Gradio UI in a container:
+
+```powershell
+docker build -t youtube-auto-dub:gradio .
+docker run --rm -p 7860:7860 `
+  -e LM_STUDIO_BASE_URL=http://host.docker.internal:1234/v1 `
+  -e LM_STUDIO_API_KEY=lm-studio `
+  -e LM_STUDIO_MODEL=gemma-3-4b-it `
+  -v ${PWD}\.cache:/app/.cache `
+  -v ${PWD}\output:/app/output `
+  -v ${PWD}\logs:/app/logs `
+  -v ${PWD}\temp:/app/temp `
+  youtube-auto-dub:gradio
+```
+
+Or use Compose:
+
+```powershell
+docker compose up --build
+```
+
+When LM Studio runs on the host machine, use `http://host.docker.internal:1234/v1` from inside Docker instead of `http://127.0.0.1:1234/v1`.
+
 Override the LM Studio endpoint or model from the CLI:
 
 ```powershell