Update Dockerfile

Dockerfile

@@ -5,8 +5,8 @@ WORKDIR $NODE_WORKDIR
 
 ADD . $NODE_WORKDIR
 
-RUN apt-get update && apt-get install -y build-essential gcc wget git libvips && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y build-essential gcc wget git libvips imagemagick && rm -rf /var/lib/apt/lists/*
 
-RUN npm i && npm i canvas
+RUN npm install
 
 CMD ["npm", "start"]