Error deploying .NET Aspire app to Kubernetes via GitHub Actions with Aspirate: "Object 'Kind' is missing in kustomization.yaml"

Question

I’m trying to set up a GitHub Actions workflow to deploy a .NET Aspire application to a remote Kubernetes cluster using Aspirate. However, when applying the generated manifests, I get this error:

error: unable to decode "/home/***/k8s/github/workspace/AspireApp.AppHost/aspirate-output/kustomization.yaml": Object 'Kind' is missing in '{"generatorOptions":{"disableNameSuffixHash":true},"resources":["postgres","apiservice"]}'

Here’s my GitHub Actions workflow:

name: Deploy .NET Aspire to Remote Kubernetes Cluster with GHCR

on:
  push:
    branches:
      - main

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup .NET
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: '9.0.x'

      - name: Install Aspirate
        run: dotnet tool install -g aspirate --prerelease

      - name: Generate Kubernetes Manifests
        run: |
          cd AspireApp.AppHost
          docker login ghcr.io -u ${{ secrets.GH_USER }} -p ${{ secrets.GH_TOKEN }}
          aspirate init -cr ghcr.io -ct latest --disable-secrets true --non-interactive
          aspirate generate --image-pull-policy Always --non-interactive --disable-secrets --include-dashboard false -pa username=admin -pa password=securepass -ct ${{ github.run_number }} -cr ghcr.io -crp davidsilwal
        env:
          DOTNET_CLI_TELEMETRY_OPTOUT: 1

      - name: Copy Manifests to Remote Host
        if: success()
        uses: appleboy/scp-action@master
        with:
          host: ${{ secrets.REMOTE_HOST }}
          username: ${{ secrets.REMOTE_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          port: 22
          source: "/home/runner/work/AspireApp/AspireApp/AspireApp.AppHost/aspirate-output/*"
          target: "/home/ubuntu/k8s"

      - name: Apply Manifests with kubectl
        if: success()
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.REMOTE_HOST }}
          username: ${{ secrets.REMOTE_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          port: 22
          script: |
            if ! command -v kubectl &> /dev/null; then
              curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
              chmod +x kubectl
              sudo mv kubectl /usr/local/bin/
            fi
            eval $(minikube docker-env)
            kubectl apply -f /home/ubuntu/k8s/github/workspace/AspireApp.AppHost/aspirate-output --validate=false

The error suggests that the kustomization.yaml file generated by Aspirate is missing the Kind field, which Kubernetes requires.

Questions:

• How can I fix this error and successfully deploy the manifests to my remote cluster? Are there any issues in my workflow that might be contributing to this?

I’m using .NET 9.0 and the latest prerelease version of Aspirate. Any help or working examples would be greatly appreciated!