Merge pull request #172 from Mark-Simulacrum/update-deps

Revert ubuntu upgrade

Author: Mark-Simulacrum

Dockerfile

@@ -1,4 +1,5 @@
-FROM ubuntu:jammy
+FROM ubuntu:focal
+# We need an older Ubuntu as github3 depends on < Python 3.10 to avoid errors
 
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
     python3-pip \