Docker teamcity-agent with multi .NET SDKs

Customized Teamcity Agent image Ubuntu 20.04 (Focal Fossa), add more tooks and .NET SDK

Docker Hub and Dockerfile

Update per build.

TeamCity Agent: 2026.1-linux
.NET 10 SDK: 10.0.202 (reuse the pre-installed .NET SDK on JetBrains TeamCity Agent docker image)
.NET 9 SDK: 9.0.313
.NET 8 SDK: 8.0.420
Powershell Core: 7.6.0
MinVer Cli: 7.0.0
Docker Compose v2: 5.1.3

Name		Name	Last commit message	Last commit date
Latest commit History 151 Commits
.github/workflows		.github/workflows
teamcity-agent		teamcity-agent
.dockerignore		.dockerignore
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md
docker-build.ps1		docker-build.ps1