.NET "error NETSDK1047: Assets file does not have a target for RID" in CI

You are publishing for a runtime identifier (RID) that restore did not produce assets for. NETSDK1047 means project.assets.json has no target for the framework/RID pair, so you must restore with that RID first.

What this error means

dotnet publish fails with "error NETSDK1047: Assets file ".../project.assets.json" doesn't have a target for 'net8.0/linux-x64'. Ensure that restore has run and that you have included ... in the RuntimeIdentifiers."

dotnet

error NETSDK1047: Assets file '/app/obj/project.assets.json' doesn't have a target for
'net8.0/linux-x64'. Ensure that restore has run and that you have included 'net8.0'
in the TargetFrameworks for your project. You may also need to include 'linux-x64'
in your project's RuntimeIdentifiers.

Common causes

Publish for a RID that restore did not cover

A framework-dependent restore produced no RID-specific assets, but publish requests -r linux-x64, so the assets file lacks that target.

A cached restore from a prior, RID-less run

A split pipeline restored without the RID and publish reuses that obj, so the needed target is missing.

How to fix it

Restore for the runtime identifier

Restore with the same RID you publish for, or let publish restore.
Avoid --no-restore on a RID publish unless restore already included that RID.
Re-run publish.

Terminal

dotnet restore -r linux-x64
dotnet publish -c Release -r linux-x64

Declare RuntimeIdentifiers in the project

List the RIDs you publish so restore always generates their targets.

Project.csproj

<PropertyGroup>
  <RuntimeIdentifiers>linux-x64;win-x64</RuntimeIdentifiers>
</PropertyGroup>

How to prevent it

Restore with the same RID you publish for.
Declare RuntimeIdentifiers for self-contained publishes.
Do not reuse a RID-less restore for a RID publish.