Dockerfile-alpine

# ##################################### #
#                                       #
#   How-To build this container image   #
#                                       #
# ##################################### #
#
#
# Local build
# -----------
# docker build \
#   -f Dockerfile \
#   --build-arg VERSION=`cat src/VERSION` \
#   --build-arg GIT_BRANCH=`git branch --show-current` \
#   -t safebytelabs-jgonf/gha-docker-demo:`cat src/VERSION` .
#
#
# Platform specific images (when you build for your own platform)
# ---------------------------------------------------------------
# docker build \
#   --build-arg BUILD_DATE=`date -u +"%Y-%m-%d"` \
#   --build-arg VERSION=`cat src/VERSION` \
#   --build-arg GIT_BRANCH=`git branch --show-current` \
#   -t ghcr.io/safebytelabs-jgonf/gha-docker-demo:`cat src/VERSION` .
#
#
# Cross-compile platform independent images (when you use a build facility
# in your platform to cross-compile for another platform)
# ------------------------------------------------------------------------
# docker buildx ls
# docker buildx create --name testbuilder
# docker buildx use testbuilder
# docker buildx inspect --bootstrap
# docker buildx build \
#   --platform linux/amd64 linux/amd64/v2 linux/amd64/v3 \
#              linux/arm64,linux/arm/v7, linux/arm/v6 \
#   --build-arg BUILD_DATE=`date -u +"%Y-%m-%d"` \
#   --build-arg VERSION=`cat src/VERSION` \
#   --build-arg GIT_BRANCH=`git branch --show-current` \
#   -t ghcr.io/safebytelabs-jgonf/gha-docker-demo:`cat src/VERSION` --push .
#
# #############################################################################

FROM alpine3.19
LABEL maintainer="Jonathan Gonzalez <jgonf@safebytelabs.com>"
ARG GIT_BRANCH

# - Let service stop gracefully
STOPSIGNAL SIGQUIT

# - Install packages
RUN apk add --no-cache PACKAGE

# - Copy project files into working directory
COPY ./src/entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

# - Run the program with a delay of 1 second (configurable at will)
CMD [ "/entrypoint.sh", "1" ]