How can I build a git tag in TeamCity?

1. Go to Edit Configuration Settings -> Version Control Settings

2. For all your VCS roots for this build configuration click Edit and then:

   1. put '+:refs/tags/*' into Branch specification textbox
   2. check Use tags as branches

Then you'll be able to choose a tag when you press the '...' button beside run.

I've managed to get the following working:

In the Build Configuration, under "Build Parameters":

Define a Configuration Parameter:

• Name: TagToBuild
• Kind: Configuration parameter
• Value:
• Spec:
  • Label: Tag to build
  • Description: This should be the full path to the tag, i.e. refs/tags/0.5.5
  • Display: Prompt
  • Type: Text

Note that the "value" field was intentionally left blank.

Then, in the VCS Root:

• Branch Name: %TagToBuild%

When I run the build, I'm then prompted to supply a branch/tag name:

Entering a value such as refs/tags/0.5.0 results in a nice build, with the branch name listed in the results:

If you try to help the user in any way beyond the description, this seems to fail. So you can't do any of the following:

1. In the Configuration Parameter set the "Value" to refs/tags/ and have the user add the tag name.
2. In the VCS Root set the "Branch Name" to refs/tags/%TagToBuild%.

In both cases on our slightly old (7.1) instance of Team City I got the error:

Failed to collect changes, error: Argument 2 for @NotNull parameter of jetbrains/buildServer/buildTriggers/vcs/VcsRootChangesLoader.loadChanges must not be null

I've not done this with tags, but I've done this with branches. I tell TeamCity to build all branches by specifying it should build +:refs/heads/*. Now whenever I push any branch, TeamCity builds it. Then within the build I then use git branch and look for the line that starts with a *. I embed that branch name in a convenient spot (AssemblyInfo.cs for .NET, package.json for node.) see http://confluence.jetbrains.com/display/TCD8/Working+with+Feature+Branches