Update Dockerfile

Dockerfile

@@ -1,13 +1,14 @@
 FROM python:3.10-slim
 
-# Install wkhtmltopdf and dependencies
-RUN apt-get update && apt-get install -y \
-    wkhtmltopdf \
-    && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y wget && \
+    wget https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6.1-2/wkhtmltox_0.12.6.1-2.jammy_amd64.deb && \
+    apt install -y ./wkhtmltox_0.12.6.1-2.jammy_amd64.deb && \
+    rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 COPY . .
 
+ENV PORT=7860
 CMD ["python", "app.py"]