FROM ubuntu:16.04

# Set the version of the gosu command and if needs to be, it can be modified at runtime
ENV GOSU_VERSION 1.10

# For building the image in a proxy environment if necessary
ARG HTTP_PROXY
ARG HTTPS_PROXY

ENV HTTP_PROXY   ${HTTP_PROXY}
ENV HTTPS_PROXY  ${HTTPS_PROXY}
ENV http_proxy   ${HTTP_PROXY}
ENV https_proxy  ${HTTPS_PROXY}

RUN \
	# Put all the dependencies into this variable to easily install everything
	DEPS="wget ca-certificates curl ksh git openjdk-8-jre-headless uuid-runtime netcat cron ssh vim iputils-ping jq" &&  \
	# Run the update before for the package manager to properly fetch install packages
	apt-get update && \
	# Install the recommended dependencies
	apt-get install -y --no-install-recommends $DEPS && \
	# Remove all the cache for the apt package manager
	rm -rf /var/lib/apt/lists/* && \
	# Get the dpkg to properly download and install that version compatible to install GOSU on the image
	dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')" && \
	\
	# Downloads the gosu command based on the dpkg version and gosu version supplied
	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
	wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
	\
	# Use GPG to install the gosu application locally
	export GNUPGHOME="$(mktemp -d)" && \
	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 && \
	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu && \
	chmod +x /usr/local/bin/gosu; \
	\
	# Cleanup of the gosu dependencies that are no longer needed
	rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc ; \ 
	# If this build in a proxy environment, you would need this for chef solo install script
	if [ ! -z "${HTTP_PROXY}" ]; then echo -e "use_proxy=yes;\nhttp_proxy=${HTTP_PROXY};" >> ~/.wgetrc; fi; \
	# Install chef solo only using this install script that is downloaded from opscode
	curl -k -L https://www.opscode.com/chef/install.sh -o /tmp/chef_install.sh && \
	chmod +x /tmp/chef_install.sh && /tmp/chef_install.sh -v 13.6.4 && rm /tmp/chef_install.sh && \
	# Create the chef directory for where chef related content will be stored 
	mkdir -p /var/chef

ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64