Minimize dockerfile

Author: Petru Dumuta

docker/Dockerfile

@@ -1,12 +1,14 @@
 FROM python:3.7-slim-buster
 
 WORKDIR /fred
-COPY requirements.txt .
-RUN pip3 install -r requirements.txt
 
 # Installing build dependencies
 RUN apt-get update && apt-get install -y curl libnss3-dev libcups2-dev libasound2-dev libatk1.0-dev libatk-bridge2.0-dev libgtk-3-dev libpangocairo-1.0-0 python3-pip xorg && apt-get clean
 
+COPY requirements.txt .
+RUN pip3 install -r requirements.txt
+RUN pyppeteer-install
+
 COPY fred/ .
 
 # Extract the model files