feat: Default to ubuntu 22.04 with Python 3.12 (#109)

Author: JonZeolla

cookiecutter.json

@@ -3,8 +3,8 @@
   "project_slug": "{{ cookiecutter.project_name.lower().replace(' ', '_').replace('-', '_') }}",
   "project_short_description": "TODO",
   "project_owner_github_username": "jonzeolla",
-  "python_version": ["3.12", "3.11", "3.10", "3.9"],
-  "docker_base": ["ubuntu:20.04", "ubuntu:22.04", "ubuntu:23.04"],
+  "python_version": ["3.12", "3.11"],
+  "docker_base": ["ubuntu:22.04", "ubuntu:20.04", "ubuntu:23.04"],
   "dockerhub": ["no", "yes"],
   "versioning": ["CalVer", "SemVer-ish"],
   "public": ["no", "yes"],

{{cookiecutter.project_name|replace(" ", "")}}/Dockerfile

@@ -21,9 +21,12 @@ LABEL org.opencontainers.image.source="https://github.com/SeisoLLC/{{ cookiecutt
 LABEL org.opencontainers.image.revision="${COMMIT_HASH}"
 LABEL org.opencontainers.image.licenses="{{ cookiecutter.license }}"
 
+# Set noninteractive as an arg so it's only available at build time
+ARG DEBIAN_FRONTEND=noninteractive
 # hadolint ignore=DL3008,DL3013
 RUN apt-get update \
  && apt-get install -y --no-install-recommends software-properties-common \
+                                               gpg-agent \
  && add-apt-repository ppa:deadsnakes/ppa \
  && apt-get install -y --no-install-recommends python{{ cookiecutter.python_version }} \
                                                python{{ cookiecutter.python_version }}-venv \