Exception when downloading chrome in docker

Hi,

I am trying to run puppeteer sharp in docker (I know it is not fully supported but I found some posts where people made it work) but every time I try to download the browser I get the following exception:

Exception when downloading the browser: System.DllNotFoundException: Unable to load shared library 'MonoPosixHelper' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libMonoPosixHelper: cannot open shared object file: No such file or directory
   at PuppeteerSharp.Helpers.Linux.LinuxSysCall.FromFilePermissions(FilePermissions value, UInt32& rval)
   at PuppeteerSharp.BrowserFetcher.DownloadAsync(Int32 revision)
   at ADM.Jobs.Program.Main(String[] args) in /usr/src/jobs/Program.cs:line 18

This is probably not an issue in PuppeteerSharp, but I was wondering if someone had the same issue and knows how to solve it.

This is the code I am using

try
{
    await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);
}
catch (Exception e)
{
    Console.WriteLine($"Exception when downloading the browser: {e}");
    throw;
}
Console.WriteLine("Browser downloaded!");

and this is the docker file:

FROM microsoft/dotnet:latest
WORKDIR /usr/src
COPY . ./
RUN dotnet build
RUN dotnet publish -o app
ENTRYPOINT ["dotnet", "app/Test.dll"]

[scabana]

Resolved by https://github.com/kblok/puppeteer-sharp/issues/1035

As for the docker part, you’ll need something like this:

RUN apt-get update \
	&& apt-get install -yq libgconf-2-4 \
	&& apt-get install -y gnupg2

#disable this when there's a version of puppeteer-sharp that supports not having mono is released
RUN apt-get install -y apt-transport-https dirmngr gnupg ca-certificates \
	&& apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF \
	&& echo "deb https://download.mono-project.com/repo/debian stable-stretch main" | tee /etc/apt/sources.list.d/mono-official-stable.list \
	&& apt-get update \
	&& apt-get install -y mono-complete

# Install latest chrome dev package and fonts to support major charsets (Chinese, Japanese, Arabic, Hebrew, Thai and a few others)
# Note: this installs the necessary libs to make the bundled version of Chromium that Puppeteer
# installs, work.

RUN apt-get update && apt-get install -y wget --no-install-recommends \
    && wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - \
    && sh -c 'echo "deb [arch=amd64] https://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list' \
    && apt-get update \
    && apt-get install -y google-chrome-unstable fonts-ipafont-gothic fonts-wqy-zenhei fonts-thai-tlwg fonts-kacst ttf-freefont --no-install-recommends \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get purge --auto-remove -y curl \
    && rm -rf /src/*.deb 

And add your docker stuff after

[kblok]

I don’t think it’s something Puppeteer-Sharp should do. We could create a Docker image with this setting.