FROM thecodingmachine/gotenberg:3.2.0 AS hack
FROM debian:9.5-slim

# |--------------------------------------------------------------------------
# | Common libraries
# |--------------------------------------------------------------------------
# |
# | Libraries used in the build process of this image.
# |

RUN echo "deb http://httpredir.debian.org/debian/ stretch main contrib non-free" > /etc/apt/sources.list &&\
    apt-get update &&\
    apt-get install -y curl wget python3-pip

# |--------------------------------------------------------------------------
# | PM2
# |--------------------------------------------------------------------------
# |
# | Installs PM2 for launching programs in background and with failure 
# | recovering. In our case: Chrome (headless) and Office (headless). 
# |

# Yep, this is dirty. The following script does not work anymore (see https://github.com/Unitech/pm2/issues/4127).
#RUN curl -sL https://raw.githubusercontent.com/Unitech/pm2/master/packager/setup.deb.sh | bash -

# Installing PM2 with Node.js and npm breaks something which prevents Google Chrome to work as expected.
# So we just copy all PM2 related files from a previous version of Gotenberg.

RUN curl -sL https://deb.nodesource.com/setup_9.x | bash - &&\
    apt-get install -y nodejs

COPY --from=hack /usr/bin/pm2 /usr/bin/pm2
COPY --from=hack /usr/share/pm2 /usr/share/pm2
COPY --from=hack /etc/default/pm2 /usr/default/pm2
COPY --from=hack /etc/systemd/system/pm2.service /etc/systemd/system/pm2.service

# |--------------------------------------------------------------------------
# | Chrome
# |--------------------------------------------------------------------------
# |
# | Installs Chrome for HTML and Markdown conversions.
# |

RUN wget -q -O - https://dl.google.com/linux/linux_signing_key.pub | apt-key add - &&\
    echo "deb http://dl.google.com/linux/chrome/deb/ stable main" | tee /etc/apt/sources.list.d/google-chrome.list &&\
    apt-get update &&\
    apt-get -y install google-chrome-stable

# |--------------------------------------------------------------------------
# | Unoconv
# |--------------------------------------------------------------------------
# |
# | Installs unoconv and LibreOffice for Office documents conversions.
# |

RUN pip3 install unoconv &&\
    # https://github.com/nextcloud/docker/issues/380
    mkdir -p /usr/share/man/man1mkdir -p /usr/share/man/man1 &&\
    apt-get -y install libreoffice

# |--------------------------------------------------------------------------
# | PDFtk
# |--------------------------------------------------------------------------
# |
# | Installs PDFtk as an alternative to pdfcpu for merging PDFs.
# | https://github.com/thecodingmachine/gotenberg/issues/29
# |

RUN apt-get -y install pdftk