Cannot build git sourced image on Windows dynamic worker

[octopus-hideaki]

Severity

Sev 3

Version

2025.3

Latest Version

I could reproduce the problem in the latest build

What happened?

The Windows dynamic worker image does not have git installed in %PATH%, so it cannot build the container image from a git URL

Reproduction

1. Create a Windows (Default) Worker Pool
2. Create a deployment step
   • Create Run a script step
   • Select Run once on a worker (Worker Pool just created)
   • Select Runs inside a container on a worker
   • Select Build container from Git URL
3. Run deployment
4. Observe failure to build image

Error and Stacktrace

00:31:10   Verbose  |       docker build --force-rm -t octopus/9bc47ae1-29cb-428c-b943-862a9cc0acac:latest https://github.com/OctopusDeploy/WorkerTools.git#master:ubuntu.22.04
00:31:10   Error    |       docker : unable to prepare context: unable to find 'git': exec: "git": executable file not found in %PATH%
00:31:10   Error    |       At C:\Octopus\Tentacle\Work\foIiv9uIkiNcbIQySKFpg\Bootstrap.ps1:58 char:1
00:31:10   Error    |       + docker build --force-rm -t octopus/9bc47ae1-29cb-428c-b943-862a9cc0ac ...
00:31:10   Error    |       + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00:31:10   Error    |       + CategoryInfo          : NotSpecified: (unable to prepa...found in %PATH%:String) [], RemoteException
00:31:10   Error    |       + FullyQualifiedErrorId : NativeCommandError

More Information

Workaround

Select Build container from an inline Dockerfile and copy the contents of the Dockerfile in the repository