# adapted from https://github.com/docker-library/elasticsearch/blob/master/2.4/Dockerfile

FROM openjdk:8-jre

# grab gosu for easy step-down from root
ENV GOSU_VERSION 1.10
RUN set -x \
	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
	&& export GNUPGHOME="$(mktemp -d)" \
	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
	&& chmod +x /usr/local/bin/gosu \
	&& gosu nobody true

RUN set -ex; \
# https://artifacts.elastic.co/GPG-KEY-elasticsearch
	key='46095ACC8548582C1A2699A9D27D666CD88E42B4'; \
	export GNUPGHOME="$(mktemp -d)"; \
	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
	gpg --export "$key" > /etc/apt/trusted.gpg.d/elastic.gpg; \
	rm -rf "$GNUPGHOME"; \
	apt-key list

# https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-repositories.html
# https://www.elastic.co/guide/en/elasticsearch/reference/5.0/deb.html
RUN set -x \
	&& apt-get update && apt-get install -y --no-install-recommends apt-transport-https && rm -rf /var/lib/apt/lists/* \
	&& echo 'deb http://packages.elasticsearch.org/elasticsearch/2.x/debian stable main' > /etc/apt/sources.list.d/elasticsearch.list

ENV ELASTICSEARCH_VERSION 2.4.6
ENV ELASTICSEARCH_DEB_VERSION 2.4.6

RUN set -x \
	\
# don't allow the package to install its sysctl file (causes the install to fail)
# Failed to write '262144' to '/proc/sys/vm/max_map_count': Read-only file system
	&& dpkg-divert --rename /usr/lib/sysctl.d/elasticsearch.conf \
	\
	&& apt-get update \
	&& apt-get install -y --no-install-recommends "elasticsearch=$ELASTICSEARCH_DEB_VERSION" \
	&& rm -rf /var/lib/apt/lists/*

ENV PATH /usr/share/elasticsearch/bin:$PATH

WORKDIR /usr/share/elasticsearch

# uid 11002 because 1000 (elasticsearch) conflicts in our infra
RUN addgroup --gid 11002 elasticsearch-user
RUN useradd --uid 11002 --gid 11002 --home /usr/share/elasticsearch elasticsearch-user

RUN set -ex \
	&& for path in \
		./data \
		./logs \
		./config \
		./config/scripts \
	; do \
		mkdir -p "$path"; \
        chown -R elasticsearch-user:elasticsearch-user "$path"; \
	done

RUN yes | bin/plugin install cloud-aws

VOLUME /usr/share/elasticsearch/data

COPY ./docker/elasticsearch/docker-entrypoint.sh /

EXPOSE 9200 9300
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["elasticsearch"]