Dockerfile.ubuntu_20.04

FROM ubuntu:20.04

LABEL SOFTWARE_NAME ubuntu 20.04
LABEL MAINTAINER "Tom Harrop"
LABEL version=5bf6256

ENV DEBIAN_FRONTEND=noninteractive
ENV LC_ALL=C

RUN     apt-get clean && \
        rm -r /var/lib/apt/lists/*

RUN     . /etc/os-release \
        echo "deb mirror://mirrors.ubuntu.com/mirrors.txt ${UBUNTU_CODENAME} main restricted universe multiverse" >> mirror.txt && \
        echo "deb mirror://mirrors.ubuntu.com/mirrors.txt ${UBUNTU_CODENAME}-updates main restricted universe multiverse" >> mirror.txt && \
        echo "deb mirror://mirrors.ubuntu.com/mirrors.txt ${UBUNTU_CODENAME}-backports main restricted universe multiverse" >> mirror.txt && \
        echo "deb mirror://mirrors.ubuntu.com/mirrors.txt ${UBUNTU_CODENAME}-security main restricted universe multiverse" >> mirror.txt && \
        mv /etc/apt/sources.list /etc/apt/sources.list.bak && \
        cat mirror.txt /etc/apt/sources.list.bak > /etc/apt/sources.list && \
        apt-get update && apt-get upgrade -y --fix-missing

RUN     apt-get update && apt-get install -y  --no-install-recommends \
            build-essential

# the version file can be used to checkout the tag like this:
# RUN     export VERSION=$(cat /app/VERSION) && \
#         export TAG="$(expr "$VERSION" : '\([^_]*\)')" && \
#         git checkout -f $TAG &&\
#         git submodule update --init --recursive

ENTRYPOINT ["/usr/bin/cat /etc/os-release"]