canvas fix

Dockerfile

@@ -2,5 +2,8 @@
 FROM node:16.10.0
 WORKDIR /app
 COPY ./ ./
+RUN apt-get -y update
+RUN apt-get install -y  build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev
+RUN npm install --build-from-source canvas
 RUN npm install
 CMD ["node", "index.js"]