Update Dockerfile

Dockerfile

@@ -4,9 +4,17 @@ FROM python:3.11-slim
 # Set working directory
 WORKDIR /app
 
-# Install system dependencies including unrar
+# Install system dependencies and download official unrar
 RUN apt-get update && apt-get install -y \
-    unrar \
+    wget \
+    && wget https://www.rarlab.com/rar/rarlinux-x64-700.tar.gz \
+    && tar -xzf rarlinux-x64-700.tar.gz \
+    && cp rar/unrar /usr/local/bin/ \
+    && cp rar/unrar /usr/bin/ \
+    && chmod +x /usr/local/bin/unrar \
+    && chmod +x /usr/bin/unrar \
+    && rm -rf rar rarlinux-x64-700.tar.gz \
+    && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements first for better caching