v0.1.8

## 🐳 Docker Support

New generic Dockerfile and CI auto-build workflow. Container images are now automatically built and pushed to `ghcr.io/ace-step/ace-step-1.5` on every release.

```bash
docker run --gpus all -p 7860:7860 \
  -v ./checkpoints:/app/checkpoints \
  ghcr.io/ace-step/ace-step-1.5:0.1.8
```

## 🎵 Retake — Controllable Variation Generation

Ported from 1.0: generate variations by mixing fresh noise into the diffusion start. `retake_variance` 0.0-1.0. (#1157, #1158, #1159)

## ✏️ Flow-Edit — Prompt-Guided Audio Editing

Ported from 1.0: prompt-guided editing of existing audio. Redesigned as overlay on Remix. (#1162, #1163, #1169)

## 🔧 Repaint Improvements

- Cache generated source latents (#1177)
- **fix(mlx)**: repaint step-injection + boundary blend on Mac (#1197)

## 🐛 Bug Fixes

- fix(mlx): DiT static buffers across threads (#1166)
- fix(score): PMI OOM under low VRAM
- fix(llm): CFG prompt alignment (#1127, #1128)
- fix(gradio): DCW defaults for non-turbo (#1207)
- fix(gradio): gr.State for task_type — stale repaint leak (#1137)
- fix(gradio): stale DiT instruction after Simple Mode (#1194)
- fix(gradio): Extract/Lego Gradio temp dir (#1210)

## 📦 Other

- feat(vae): community VAE swap-in (#1139)
- feat: raw remix task type (#1143), DCW sampler (#1120)
- feat(docker): Dockerfile + CI auto-build (#1211)
- docs: remove experimental UIs (#1178, #1179)

**Full Changelog**: https://github.com/ace-step/ACE-Step-1.5/compare/v0.1.7...v0.1.8