Update Dockerfile

Dockerfile

@@ -11,6 +11,7 @@ RUN apt-get update && apt-get install -y \
 RUN apt update
 RUN apt install pkg-config cmake libcairo2-dev libpangocairo-1.0-0 python3-cffi python3-cairocffi libpango1.0-dev -y
 RUN apt install dpkg -y
+RUN dpkg -l | grep libpango1.0-dev
 COPY requirements.txt ./
 
 RUN pip3 install -r requirements.txt