Singularity

Bootstrap: docker
From: node:8
Includecmd: no

%post
    apt-get update && apt-get install -yq gconf-service libasound2 libatk1.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 ca-certificates fonts-liberation libappindicator1 libnss3 lsb-release xdg-utils wget curl && rm -r /var/lib/apt/lists/*

%environment
    NODE_ENV=development
    PORT=8000
    ALLOW_HTTP=true
    URL=localhost
    export NODE_ENV PORT ALLOW_HTTP URL

%appinstall pdf_server
    git clone https://github.com/alvarcarto/url-to-pdf-api.git pdf_server
    cd pdf_server
    npm install
    chmod -R 0755 .

%startscript
    cd "${APPROOT_pdf_server}/pdf_server"
    # Use nohup and /dev/null to completely detach server process from terminal
    nohup npm start > /dev/null 2>&1 < /dev/null &


%apprun pdf_client
    if [ -z "${1:-}" ]; then
        echo "Usage: singularity run --app pdf <instance://name> <URL> [output file]"
        exit 1
    fi
    curl -o "${SINGULARITY_APPDATA}/output/${2:-output.pdf}" "${URL}:${PORT}/api/render?url=${1}"