Dockerfile

#
# Copyright 2019 Atos Spain S.A
#
# This file is part of iotagent-lora
#
# iotagent-lora is free software: you can redistribute it and/or
# modify it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the License,
# or (at your option) any later version.
#
# iotagent-lora is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with iotagent-lora. If not, see http://www.gnu.org/licenses/.
#

ARG NODE_VERSION=fermium-slim
FROM node:${NODE_VERSION}
ARG GITHUB_ACCOUNT=Atos-Research-and-Innovation
ARG GITHUB_REPOSITORY=IoTagent-LoRaWAN
ARG DOWNLOAD=latest
ARG SOURCE_BRANCH=master

# Copying Build time arguments to environment variables so they are persisted at run time and can be 
# inspected within a running container.
# see: https://vsupalov.com/docker-build-time-env-values/  for a deeper explanation.

ENV GITHUB_ACCOUNT=${GITHUB_ACCOUNT}
ENV GITHUB_REPOSITORY=${GITHUB_REPOSITORY}
ENV DOWNLOAD=${DOWNLOAD}

MAINTAINER FIWARE IoTAgent Team. Atos Spain S.A

# IMPORTANT: For production environments use Docker Secrets to protect values of the sensitive ENV 
# variables defined below, by adding _FILE to the name of the relevant variable.
#
# - IOTA_AUTH_USER, IOTA_AUTH_PASSWORD - when using Keystone Security
# - IOTA_AUTH_CLIENT_ID, IOTA_AUTH_CLIENT_SECRET - when using OAuth2 Security

#
# The following RUN command retrieves the source code from GitHub.
# 
# To obtain the latest stable release run this Docker file with the parameters
# --no-cache --build-arg DOWNLOAD=stable
# To obtain any speciifc version of a release run this Docker file with the parameters
# --no-cache --build-arg DOWNLOAD=1.7.0
#
# The default download is the latest tip of the master of the named repository on GitHub
#
# Alternatively for local development, just copy this Dockerfile into file the root of the repository and 
# replace the whole RUN statement by the following COPY statement in your local source using :
#
# COPY . /opt/iotagent-lora/
#
RUN if [ "${DOWNLOAD}" = "latest" ] ; \
	then \
		RELEASE="${SOURCE_BRANCH}"; \
		echo "INFO: Building Latest Development from ${SOURCE_BRANCH} branch."; \
	elif [ "${DOWNLOAD}" = "stable" ]; \
	then \
		RELEASE=$(curl -s https://api.github.com/repos/"${GITHUB_ACCOUNT}"/"${GITHUB_REPOSITORY}"/releases/latest | grep 'tag_name' | cut -d\" -f4); \
		echo "INFO: Building Latest Stable Release: ${RELEASE}"; \
	else \
	 	RELEASE="${DOWNLOAD}"; \
	 	echo "INFO: Building Release: ${RELEASE}"; \
	fi && \
	RELEASE_CONCAT=$(echo "${RELEASE}" | tr / -); \
	# Ensure that unzip is installed, and download the sources
	apt-get update && \
	apt-get install -y  --no-install-recommends unzip wget && \
	wget --no-check-certificate -O source.zip https://github.com/"${GITHUB_ACCOUNT}"/"${GITHUB_REPOSITORY}"/archive/"${RELEASE}".zip && \
	unzip source.zip && \
	rm source.zip && \
	mv "${GITHUB_REPOSITORY}-${RELEASE_CONCAT}" /opt/iotagent-lora && \
	# Remove unzip and clean apt cache
	apt-get clean && \
	apt-get remove -y unzip && \
	apt-get -y autoremove

WORKDIR /opt/iotagent-lora

RUN \
	# Ensure that Git is installed prior to running npm install
	apt-get update && \
	apt-get install -y git  && \
	npm install pm2@3.2.2 -g && \
	echo "INFO: npm install --production..." && \
	npm install --production && \
	# Remove Git and clean apt cache
	apt-get clean && \
	apt-get remove -y git && \
	apt-get -y autoremove  && \
	chmod +x docker/entrypoint.sh

USER node
ENV NODE_ENV=production

# Expose 4041 for NORTH PORT
EXPOSE ${IOTA_NORTH_PORT:-4041}

ENTRYPOINT ["docker/entrypoint.sh"]
CMD ["-- ", "config.js"]