Update Dockerfile

Dockerfile

@@ -6,10 +6,11 @@ ENV TZ=Asia/Shanghai
 
 WORKDIR /app
 
+# Install git
+RUN apt-get update && apt-get install -y git
+
 # 安装git，克隆仓库，然后移除git以减小镜像体积
-RUN apk add --no-cache git && \
-    git clone https://github.com/Chenyme/oaifree-tools.git /app && \
-    apk del git
+RUN git clone https://github.com/Chenyme/oaifree-tools.git /app
 
 # Install dependencies
 RUN pip install --no-cache-dir -r requirements.txt