Command-line GitVersion in a Linux environment

[TAGC]

I'm trying to configure a Travis build for one of my C# projects and I'd like to be able to use GitVersion to calculate the version of the project from its git history so I can programatically set my project version during builds.

Command-line versions of GitVersion are only available using brew (OSX-specific) and choco (Windows-specific). How can I use it in a Linux environment like Travis CI builds use? Here's an example of my config where I tried to install the gem and use it that way (just to see what happened):

{
  "language": "csharp",
  "dist": "trusty",
  "mono": "none",
  "dotnet": "2.0.0",
  "install": [
    "gem install gitversion"
  ],
  "script": [
    "cd AsyncBus",
    "dotnet restore",
    "dotnet setversion $(gitversion -showvariable NuGetVersionV2)",
    "dotnet build",
    "dotnet test",
    "dotnet pack -c Release -o artifacts/",
    "dotnet nuget push --source https://www.nuget.org/api/v2/package --api-key $NUGET_APIKEY $(find artifacts -name \"*.nupkg\")"
  ],
  "group": "stable",
  "os": "linux"
}

The build failed with these logs:

2.27s$ dotnet setversion $(gitversion -showvariable NuGetVersionV2)
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 1: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: MZ������@������: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 1: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: .rsrc����Z@@.reloc��: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 2: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: ���: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 15: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: rap�o: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 16: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: ,�~: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 18: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: �/��+��+��+��,�s��%�}����8��s���r]p�o: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 19: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: -��rap�o: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 20: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: ,�~: not found
/home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: 22: /home/travis/.rvm/gems/ruby-2.4.1/gems/gitversion-3.5.0/bin/GitVersion.exe: Syntax error: "(" unexpected
Missing version string
The command "dotnet setversion $(gitversion -showvariable NuGetVersionV2)" exited with 1.

[asbjornu]

We have a Docker image as well. Have you tried that?

[TAGC]

That could work. I've switched to AppVeyor for all this stuff since, though.