Update Dockerfile

Dockerfile

@@ -4,21 +4,23 @@ FROM python:3.9-slim
 # Set the working directory inside the container
 WORKDIR /app
 
-# Update package lists and install necessary dependencies for wkhtmltopdf
-# These include fonts and rendering libraries
+# Update package lists and install ALL necessary system dependencies for wkhtmltopdf
+# This now includes the ones that caused the previous error, resolving the dpkg failure.
 RUN apt-get update && apt-get install -y --no-install-recommends \
     wget \
+    fontconfig \
+    libjpeg62-turbo \
+    libssl1.1 \
+    libxext6 \
     xfonts-75dpi \
     xfonts-base \
     libxrender1 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-# Download the specific version of wkhtmltopdf that is known to work
+# Now, download and install the package. It will succeed because its dependencies are present.
 RUN wget https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.buster_amd64.deb && \
-    # Install the package using dpkg
     dpkg -i wkhtmltox_0.12.6-1.buster_amd64.deb && \
-    # Clean up the downloaded file
     rm wkhtmltox_0.12.6-1.buster_amd64.deb
 
 # Copy your application files into the container