Docker: How to build a functional Dockerfile

I’m trying to understand how to run PlaywrightSharp in a docker container. I started with the basic, the Net Core image and got:

PlaywrightSharp.PlaywrightSharpException: 'Host system is missing dependencies!

  Missing libraries are:
      libgobject-2.0.so.0
      libglib-2.0.so.0
      libnss3.so
      libnssutil3.so
      libsmime3.so
      libnspr4.so
      libatk-1.0.so.0
      libatk-bridge-2.0.so.0
      libx11.so.6
      libx11-xcb.so.1
      libxcb.so.1
      libcups.so.2
      libdbus-1.so.3
      libgio-2.0.so.0
      libexpat.so.1
      libdrm.so.2
      libxkbcommon.so.0
      libxcomposite.so.1
      libxdamage.so.1
      libxext.so.6
      libxfixes.so.3
      libxrandr.so.2
      libgtk-3.so.0
      libgdk-3.so.0
      libpango-1.0.so.0
      libcairo.so.2
      libgdk_pixbuf-2.0.so.0
      libgbm.so.1
      libasound.so.2
      libatspi.so.0

I know documentation on this topic is missing, but I would like wich is the best way to start:

Option A: The Playwright image and install Net Core dependencies Option B: The Net Core image and install Playwright dependencies

I took a look at the Dockerfile from the Playwright project but could not make it work.

[GaryYu2by2]

Our client only allows Debian images in their k8s, they require a gRPC service to capture PDFs from one of their in-house developed web app. This is the complete Docker file, works with both asp.net core 3.1 and 5.0. For Playwright 0.162.0 and Chromium only.

FROM mcr.microsoft.com/dotnet/aspnet:5.0 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 playwright-chromium@1.6.2 && \
     npm i playwright-firefox@1.6.2 && \
     npm i playwright-webkit@1.6.2
 RUN apt-get remove nodejs -y

WORKDIR /app
EXPOSE 80

FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
COPY ["MyApp.Api/MyApp.Api.csproj", "MyApp.Api/"]
RUN dotnet restore "MyApp.Api/MyApp.Api.csproj"
COPY . .
WORKDIR "/src/MyApp.Api"
RUN dotnet build "MyApp.Api.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "MyApp.Api.csproj" -c Release -o /app/publish

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "MyApp.Api.dll"]

[pablopioli]

And this is for Playwright 0.191 on Net 5. It´s a little different since the platform runtimes are copied at build time.

FROM mcr.microsoft.com/dotnet/sdk:5.0 as build
WORKDIR /src
COPY ["MyApp.csproj", ""]
RUN dotnet restore "./MyApp.csproj"
COPY . .
WORKDIR "/src/."
RUN dotnet publish /src/MyApp/MyApp.csproj -c Release -o /publish \
    && mkdir /publish/.playwright \
    && cp -r /src/MyApp/bin/Release/net5.0/.playwright/unix /publish/.playwright 
    
FROM mcr.microsoft.com/playwright:v1.9.1-focal AS playwright
RUN apt-get update \
    && apt-get install -y wget \
    && wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
    && dpkg -i packages-microsoft-prod.deb \
    && apt-get update \
    && apt-get install -y apt-transport-https \
    && apt-get install -y aspnetcore-runtime-5.0 \
    && apt-get remove -y wget
EXPOSE 80
COPY --from=build /publish/ /app/
RUN chown -R pwuser:pwuser /app
ENTRYPOINT ["dotnet", "/app/MyApp.dll"]