[Bug]Segmentation Fault on docker alpine 3.13

[PedroCigaw]

Describe the bug
I rely on GitVersion.MSBuild on all my .net core projects. When creating docker images of these project all the versioning was working fine up until I needed to create more compact docker images. When converting my docker files to build an image based on alpine the projected failed to compile with a Segmentation Fault. Initially I thought it was an issue with the build task, but when I was creating a reproducible sample I found that the problem wasn't related to the build task, but gitversion tools also has the problem.

Expected Behavior

running dotnet-gitversion should return version information

Actual Behavior

returns Segmentation Fault

Steps to Reproduce

From within a git repository. Create a Dockerfile
`
ARG VERSION=5.0-alpine

#FROM mcr.microsoft.com/dotnet/aspnet:$VERSION AS base
FROM mcr.microsoft.com/dotnet/runtime-deps:$VERSION AS base
WORKDIR /app

FROM mcr.microsoft.com/dotnet/sdk:$VERSION AS sdkwithgitversion
RUN dotnet tool install -g GitVersion.Tool
ENV PATH="$PATH:/root/.dotnet/tools"

FROM sdkwithgitversion AS build
WORKDIR /src
COPY . .
`
run the docker file and bash into it. Then run dotnet-gitversion to see the error.

Alternatively I have created a reproducable repo here
https://github.com/PedroCigaw/gitversionalpinebug

1. clone repo above
2. run: docker build -t alpinebug -f .\Dockerfile.alpine.base .
3. run: docker run -it alpinebug /bin/ash
4. type: dotnet-gitversion

Context

Our docker images have to be built on alpine from a security and size perspective, this has meant I been forced exclude the GitVersion.MSBuild references when building the docker images, which in turn means no versioning. I'm hoping there is a simple solution in the offing before going to the time and expense of rethinking how I can manage versions consistently between docker builds, CI Builds and nuget packages

• Version Used: GitVersion 5.6.8
• Operating System and version (Windows 10, Ubuntu 18.04): Window 10
• Link to your project: https://github.com/PedroCigaw/gitversionalpinebug

[PedroCigaw]

Upon further investigation I found this works if I specifically target the version to "5.0-alpine3.12" of the dotnet docker images.

[asbjornu]

I assume it's LibGit2Sharp that is crashing. There's not much we can do in GitVersion but upgrade once libgit2/libgit2sharp#1872 and possibly dotnet/runtime#50739 are resolved.

[seanamos]

If you pull down the .nupkg file, unzip it and dotnet run gitversion.dll in the netcoreapp3.1 folder it works.
The net5.0 variant segfaults.

I haven't had time to debug this any further though.

[asbjornu]

With libgit2/libgit2sharp#1872 and dotnet/runtime#50739 both resolved, I hope #2916 may fix this bug.

[github-actions]

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