docker-alpine-base/Dockerfile at master · Technosoft2000/docker-alpine-base · GitHub

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FROM alpine:3.12.0

LABEL maintainer="Technosoft2000 <technosoft2000@gmx.net>" \
      image.base.version="3.12-1" \
      image.base.description="Docker image for Alpine based docker images by Technosoft2000" \
      image.base.date="2020-10-05" \
      url.base.docker="https://hub.docker.com/r/technosoft2000/alpine-base" \
      url.base.github="https://github.com/Technosoft2000/docker-alpine-base" \
      url.base.support="https://github.com/Technosoft2000/docker-alpine-base"

# Set basic environment settings
ENV \
    # - VERSION: the docker image version (corresponds to the above LABEL image.version)
    VERSION="1.0.0" \
    \
    # - TERM: the name of a terminal information file from /lib/terminfo,
    # this file instructs terminal programs how to achieve things such as displaying color.
    TERM="xterm" \
    \
    # - LANG, LANGUAGE, LC_ALL: language dependent settings (Default: de_DE.UTF-8)
    LANG="de_DE.UTF-8" \
    LANGUAGE="de_DE:de" \
    LC_ALL="de_DE.UTF-8" \
    \
    # - SET_CONTAINER_TIMEZONE: set this environment variable to true to set timezone on container startup
    SET_CONTAINER_TIMEZONE="false" \
    \
    # - CONTAINER_TIMEZONE: UTC, Default container timezone as found under the directory /usr/share/zoneinfo/
    CONTAINER_TIMEZONE="UTC" \
    \
    # - PKG_*: the needed applications for installation
    GOSU_VERSION="1.12" \
    PKG_BASE="bash tzdata git coreutils shadow tree"

RUN \
    # update the package list
    apk -U upgrade && \
    \
    # install gosu from https://github.com/tianon/gosu
    # https://github.com/tianon/gosu/blob/master/INSTALL.md
    set -ex; \
	\
	apk add --no-cache --virtual .gosu-deps \
		dpkg \
		gnupg \
		openssl \
	; \
	\
	dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
	wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
	\
    # verify the signature
	export GNUPGHOME="$(mktemp -d)"; \
	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
	#HINT: deactivated at the moment because it results in 'No such file ...' error
    #rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc; \
	\
	chmod +x /usr/local/bin/gosu; \
    # verify that the binary works
	gosu nobody true; \
	\
	apk del .gosu-deps; \
    \
    # install the needed applications
    apk -U add --no-cache $PKG_BASE && \
    \
    # create init folder
    mkdir -p /init && \
    \
    # cleanup temporary files
    rm -rf /tmp/* && \
    rm -rf /var/cache/apk/*

# copy files to the image (info.txt and scripts)
COPY *.txt /init/
COPY *.sh /init/

# start.sh will download the latest version of the APP and run it.
RUN chmod u+x /init/start.sh

# launch the start.sh
CMD ["/bin/bash", "-c", "/init/start.sh"]