contrib/packaging/docker/ubuntu.template

chgserver: remove Python 2 branch

Differential Revision: https://phab.mercurial-scm.org/D12305

FROM ubuntu:%CODENAME%

RUN groupadd -g 1000 build && \
    useradd -u 1000 -g 1000 -s /bin/bash -d /build -m build

ARG DEBIAN_FRONTEND=noninteractive

ENV TZ=%TZ%

RUN apt-get update && apt-get install -y \
  build-essential \
  debhelper \
  devscripts \
  dh-python \
  less \
  python \
  python3-all \
  python3-all-dev \
  python3-docutils \
  unzip \
  zip