Update base image.

Dockerfile

 
 ###--- Python Stage ---###
 
-FROM python:3.7.7-buster
+FROM ocaml/opam2:debian-10
 
 LABEL maintainer="David Trattnig <david.trattnig@subsquare.at>"
 
@@ -35,9 +35,6 @@ COPY configuration/sample-docker.engine.ini configuration/engine.ini
 COPY configuration/sample-docker.gunicorn.conf.py configuration/gunicorn.conf.py
 
 
-###--- OPAM / Liquidsoap Stage ---###
-
-FROM ocaml/opam2:latest
 
 # Liquidsoap Dependencies
 RUN opam init --disable-sandboxing -y