SingularityRecipe

Bootstrap: docker
From: ubuntu:18.04

%files
    config.json

%labels
    Maintainer wever
    Version v0.1a

%post
    ## Update the container
    apt-get update
    apt-get install -y apt-utils

    ## Install packages
    apt-get install -y software-properties-common
    add-apt-repository ppa:cwchien/gradle
    apt-get update
    apt-get install -f
    apt-get install -y openjdk-8-jdk
    apt-get install -y git
    apt-get install -y curl
    apt-get install -y build-essential
    apt-get install -y --allow-unauthenticated gradle
    apt-get install -y mc
    rm -rf /var/lib/apt/lists/*
    echo "#####################################"
    echo "# Finished first part of the setup. #"
    echo "#####################################"

    ## We can get the bootup script from git repository (a)
    ## or copy them as files beside the image (b)
    ## or as volume for development (c)

    ## a. Clone the bootup scripts in current directory
    ## n. Or copy from the disk
    ## COPY . .

    ## mkdir sede
    ## The following command is not necessary as the directory already exists as config.json is copied to this directory.
    mkdir -p /temp
    rm -rf /temp/startup.sh
    touch /temp/startup.sh
    echo "#!/bin/bash" >> /temp/startup.sh
    echo "mkdir sede" >> /temp/startup.sh
    echo "cd sede" >> /temp/startup.sh

    echo "git clone https://github.com/CRC-901-On-the-Fly-Computing/executor-bootup.git . --branch master" >> /temp/startup.sh
    echo "cp /config.json ./config.json" >> /temp/startup.sh
    echo "find . -type f -name '*.sh' | xargs chmod +x" >> /temp/startup.sh
    echo "./generate.sh" >> /temp/startup.sh
    chmod +x /temp/startup.sh

%runscript
    ## set environment variables for external address of the executor
    export EXT_EXECUTOR_IP=$(curl ipinfo.io/ip)
    export EXT_EXECUTOR_PORT=$1
    export EXECUTOR_ADDRESS="${EXT_EXECUTOR_IP}:${EXT_EXECUTOR_PORT}"

    ## set environment variables for internal address of the executor
    export INT_EXECUTOR_IP=$EXT_EXECUTOR_IP
    export INT_EXECUTOR_PORT=$EXT_EXECUTOR_PORT

    ## show the environment variable configuration in the bash
    echo "External executor ip configured as ${EXT_EXECUTOR_IP} and port as ${EXT_EXECUTOR_PORT}."
    echo "Internal executor ip configured as ${INT_EXECUTOR_IP} and port as ${INT_EXECUTOR_PORT}."
    echo "Executor address is set to ${EXECUTOR_ADDRESS}"

    ## run the startup script for actually starting the executor.
    echo "now execute bash script /temp/startup.sh $@"
    exec /temp/startup.sh $@