Dockerfile-ubuntu

FROM ubuntu:16.04

# Set version for s6 overlay
ARG OVERLAY_VERSION="v1.22.1.0"
# Set arch for s6 overlay
ARG OVERLAY_ARCH="amd64"
# Set version for s6-init packages
ARG S6_INIT_SCRIPTS_VERSION="v0.8"
# Set s6-init packages to install
ARG S6_INIT_PACKAGES="nginx"

RUN \
    echo "**** Update sources ****" \
       && apt-get update \
    && \
    echo "**** Install core dependencies ****" \
        && apt-get install -y \
            curl \
            nginx \
    && \
    echo "**** Add s6 overlay ****" \
        && curl -o \
            /tmp/s6-overlay.tar.gz -L \
            "https://github.com/just-containers/s6-overlay/releases/download/${OVERLAY_VERSION}/s6-overlay-${OVERLAY_ARCH}.tar.gz" \
        && tar xfz \
            /tmp/s6-overlay.tar.gz -C / \
    && \
    echo "**** Create docker user and make the user folders ****" \
        && groupmod -g 1000 users \
        && useradd -u 1000 -U -d /config -s /bin/false docker \
        && usermod -G users docker \
        && mkdir -p \
            /app \
            /config \
            /defaults \
    && \
    echo "**** Install init process ****" \
        && curl -L "https://github.com/Josh5/s6-init/archive/${S6_INIT_SCRIPTS_VERSION}.tar.gz" -o /tmp/s6-init.tar.gz \
        && tar xfz /tmp/s6-init.tar.gz -C /tmp \
        && cd /tmp/s6-init-* \
        && ./install \
    && \
    echo "**** Cleanup ****" \
        && apt-get clean \
        && rm -rf \
            /tmp/*