fix: switch back to Gradio SDK with python_version 3.12

- ZeroGPU requires Gradio SDK, not Docker SDK
- Pin Python to 3.12 via python_version metadata
- Remove Dockerfile, add back packages.txt for system deps

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -1,17 +0,0 @@
-FROM python:3.12-slim
-
-WORKDIR /code
-
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    build-essential gcc g++ git-lfs ffmpeg libsm6 libxext6 \
-    && apt-get clean && rm -rf /var/lib/apt/lists/*
-
-COPY requirements.txt .
-RUN pip install --no-cache-dir --upgrade pip && \
-    pip install --no-cache-dir -r requirements.txt
-
-COPY . .
-
-EXPOSE 7860
-
-CMD ["python", "app.py"]

README.md

@@ -3,8 +3,10 @@ title: Image Matching WebUI
 emoji: 👀
 colorFrom: blue
 colorTo: green
-sdk: docker
-app_port: 7860
+sdk: gradio
+sdk_version: "6.19.0"
+python_version: "3.12"
+app_file: app.py
 pinned: false
 license: apache-2.0
 ---

packages.txt

@@ -0,0 +1,7 @@
+build-essential
+gcc
+g++
+git-lfs
+ffmpeg
+libsm6
+libxext6