I have created a .NET Core 3.1 nuget library that wraps functionality around Playwright-sharp v0.192.0. I'm using this library in a REST API (also .NET Core 3.1), and locally everything is working fine. The only requirement is that the host application also needs to reference Playwright-sharp in order to download the drivers correctly. This I can live with.
The problem arises when I try to run my REST API in Docker (linux). After installing the dependencies (libc6, libgdi etc) I get this exception:
PlaywrightSharp.PlaywrightSharpException: Driver not found in any of the locations.
at PlaywrightSharp.Transport.Connection.GetExecutablePath() in /home/runner/work/playwright-sharp/playwright-sharp/src/PlaywrightSharp/Transport/Connection.cs:line 274
at PlaywrightSharp.Transport.Connection.GetProcess(String driverExecutablePath) in /home/runner/work/playwright-sharp/playwright-sharp/src/PlaywrightSharp/Transport/Connection.cs:line 233
at PlaywrightSharp.Transport.Connection.InstallAsync(String driverPath, String browsersPath) in /home/runner/work/playwright-sharp/playwright-sharp/src/PlaywrightSharp/Transport/Connection.cs:line 105
One suggestion is to start with the Playwright-sharp image instead of the .NET 3.1 but it seems to me it should be a way to include the required files and place them in the correct location for this to work. My current dockerfile looks like this:
#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
EXPOSE 80
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
COPY ./PlaywrightWrapper/nuget.config .
COPY ["PlaywrightWrapper/PlaywrightWrapper.csproj", "PlaywrightWrapper/"]
RUN dotnet restore "PlaywrightWrapper/PlaywrightWrapper.csproj" --configfile nuget.config
COPY . .
WORKDIR "/src/PlaywrightWrapper"
RUN dotnet build "PlaywrightWrapper.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "PlaywrightWrapper.csproj" -c Release -r linux-x64 -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
# install depdendencies
RUN apt-get update \
&& apt-get install -y --allow-unauthenticated \
libc6-dev \
libgdiplus \
libx11-dev \
&& rm -rf /var/lib/apt/lists/*
# copy the Playwright browsers from .NET build step
WORKDIR /root/.cache/ms-playwright
COPY --from=build /root/.cache/ms-playwright ./
WORKDIR /app
ENTRYPOINT ["dotnet", "PlaywrightWrapper.dll"]
This step:
WORKDIR /root/.cache/ms-playwright
COPY --from=build /root/.cache/ms-playwright ./
copies the files to the same folder as I've seen in the official Playwright-sharp docker image.
Does anyone have a working Dockerfile that installs the required Playwright drivers for headless PDF generation inside a Docker container?
Finally had time to look into this again, and came up with a solution.
A couple of promising approaches using the playwrightsharp docker image (suggested here) just didn't work in my case. Still not sure exactly why, but I had to manually add all dependencies instead. Just make sure to match the playwright browser versions (npm i ..) to the Playwright Sharp NuGet package you're using (in my case 0.192.0):
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
RUN apt-get update && apt-get install -y --no-install-recommends \
xvfb
RUN apt-get update && apt-get install -y --no-install-recommends \
fonts-liberation\
libasound2\
libatk-bridge2.0-0\
libatk1.0-0\
libatspi2.0-0\
libcairo2\
libcups2\
libdbus-1-3\
libdrm2\
libgbm1\
libglib2.0-0\
libgtk-3-0\
libnspr4\
libnss3\
libpango-1.0-0\
libx11-6\
libxcb1\
libxcomposite1\
libxdamage1\
libxext6\
libxfixes3\
libxrandr2
RUN apt-get update && apt-get install -y npm && \
npm i [email protected] && \
npm i [email protected] && \
npm i [email protected]
RUN apt-get remove nodejs -y
... the rest of your docker file here