Hello World Example For Wine Mono Running in Ubuntu Docker Container

Dockerfile

##########################################################
###                                                    ###
###     The build stage that compiles the exe file     ###
###                                                    ### 
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FROM ubuntu:18.04 as build_stage

# Install wget
RUN apt-get update
RUN apt-get install -y wget

# Add 32-bit architecture
RUN dpkg --add-architecture i386
RUN apt-get update

# Install Wine
RUN apt-get install -y software-properties-common gnupg2
RUN wget -nc https://dl.winehq.org/wine-builds/winehq.key
RUN apt-key add winehq.key
RUN apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main'
RUN apt-get install -y --install-recommends winehq-stable winbind

# Turn off Fixme warnings
ENV WINEDEBUG=fixme-all

# Setup a Wine prefix
ENV WINEPREFIX=/root/.net 
ENV WINEARCH=win64
RUN winecfg

# Install Winetricks
RUN apt-get install -y cabextract
RUN wget https://raw.githubusercontent.com/Winetricks/winetricks/master/src/winetricks
RUN chmod +x winetricks
RUN cp winetricks /usr/local/bin

# Install .NET Framework 4.5.2
RUN wineboot -u && winetricks -q dotnet452

# Compile HelloWorld.cs
COPY HelloWorld.cs /root/.net/drive_c/HelloWorld.cs
WORKDIR /root/.net/drive_c/
RUN wine /root/.net/drive_c/windows/Microsoft.NET/Framework64/v4.0.30319/csc.exe HelloWorld.cs


#########################################################
###                                                   ###
###         The final image that runs the exe         ###
###                                                   ### 
#########################################################

FROM ubuntu:18.04

# Install wget
RUN apt-get update
RUN apt-get install -y wget

# Add 32-bit architecture
RUN dpkg --add-architecture i386
RUN apt-get update

# Install Wine
RUN apt-get install -y software-properties-common gnupg2
RUN wget -nc https://dl.winehq.org/wine-builds/winehq.key
RUN apt-key add winehq.key
RUN apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main'
RUN apt-get install -y --install-recommends winehq-stable winbind
ENV WINEDEBUG=fixme-all

# Setup a Wine prefix
ENV WINEPREFIX=/root/.demo 
ENV WINEARCH=win64
RUN winecfg

# Install Mono
RUN wget -P /mono http://dl.winehq.org/wine/wine-mono/4.9.4/wine-mono-4.9.4.msi
RUN wineboot -u && msiexec /i /mono/wine-mono-4.9.4.msi
RUN rm -rf /mono/wine-mono-4.9.4.msi

# Copy the HelloWorld.exe from the build stage
COPY --from=build_stage /root/.net/drive_c/HelloWorld.exe /HelloWorld.exe

# Run the HelloWorld.exe
ENTRYPOINT [ "wine", "/HelloWorld.exe"]

HelloWorld.cs

using System;

namespace HelloWorld {
    class Program {
        static void Main(string[] args) {
            Console.WriteLine("\n\n Hello World!");
        }
    }
}