Running electron-pdf in a docker container produces no output

Hi there.

I’m trying to running electron-pdf cli in a docker container with Xvfb but the cli produces no output and dont generate the pdf file. Any idea what could happening or how could I debug it to find the problem? I’ve tried several configurations in Dockerfile but all of them produces the same result .

This is my actual Dockerfile:

FROM node:slim

# Electron support (from: http://askubuntu.com/a/510186)
RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - && \
    sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list' && \
    apt-get update -y && \
    apt-get install -y google-chrome-stable xvfb

RUN Xvfb -screen 1280x2000x32 :0 & export DISPLAY=:0

COPY ./ pdfbuilder
WORKDIR pdfbuilder
RUN npm install -g electron-pdf
RUN npm install --production

EXPOSE 80
ENV PORT 80

CMD ["node", "index.js"]

This is my test in index.js:

var exec = require("child_process").exec;

console.log("verifying electron-pdf");
exec("electron-pdf ./views/index.html ./teste.pdf", function (err, stdout, stderr) {
    console.log(stdout); //no output
    console.log(stderr); //no output
    if (err) {
        console.log("Error verifying electron-pdf");
        console.log(err.stack);
    } else {
        console.log("electron-pdf OK!"); //shows output, but no pdf generated
    }
});

[sergiofm]

I’ve found out what was the problem with the fonts.

I have to put a file called .fonts.conf in the /root with this content:

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
  <match target="font">
    <edit name="antialias" mode="assign"><bool>true</bool></edit>
  </match>
  <match target="font">
    <edit name="hintstyle" mode="assign"><const>hintnone</const></edit>
  </match>
  <match target="font">
   <edit mode="assign" name="hinting"><bool>false</bool></edit>
  </match>
</fontconfig>

This make all the fonts work like a charm.

[codecounselor]

Sound’s like you’ve got this resolved, I’m going to close it.