Cannot run tests from Github Actions - ""tofu": executable file not found in $PATH; } "

[mrybson]

Describe the bug
I am trying to run the terratests from Github Actions. It works fine locally, but I am getting below error when running from the GH Runner.

To Reproduce

name: Integration Tests
on:
  workflow_dispatch
jobs:
  go-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: '1.21'
      
      - name: Create module
        working-directory: terraform/tests
        run: go mod init "mymod"  
      
      - name: Go mod tidy
        working-directory: terraform/tests
        run: go mod tidy
 
      - name: Run Tests
        working-directory: terraform/tests
        run: go test -v -tags mytag

Expected behavior
Tests are getting executed.

Terminal output

[Integration Tests/go-tests] ⭐ Run Main Run Tests
[Integration Tests/go-tests] 🐳 docker exec cmd=[bash --noprofile --norc -e -o pipefail /var/run/act/workflow/4] user= workdir=terraform/tests
| === RUN MyTestFunction1
| === PAUSE MyTestFunction1
| === CONT MyTestFunction1
| myTest.go:31: mLaAA7
| MyTestFunction1 2024-01-25T16:54:12Z retry.go:91: tofu [init -upgrade=false]
| MyTestFunction1 2024-01-25T16:54:12Z logger.go:66: Running command tofu with args [init -upgrade=false]
| MyTestFunction1 2024-01-25T16:54:12Z retry.go:99: Returning due to fatal error: FatalError{Underlying: error while running command: exec: "tofu": executable file not found in $PATH; }
| apply.go:15:
| Error Trace: /root/go/pkg/mod/github.com/gruntwork-io/terratest@v0.46.11/modules/terraform/apply.go:15
| /mnt/c/repos/terraform-templates-deployment/terraform/tests/myTest.go:48
| Error: Received unexpected error:
| FatalError{Underlying: error while running command: exec: "tofu": executable file not found in $PATH; }
| Test: MyTestFunction1
| MyTestFunction1 2024-01-25T16:54:12Z retry.go:91: tofu [destroy -auto-approve -input=false -var postfix=mlaaa7 -lock=false]
| MyTestFunction1 2024-01-25T16:54:12Z logger.go:66: Running command tofu with args [destroy -auto-approve -input=false -var postfix=mlaaa7 -lock=false]
| MyTestFunction1 2024-01-25T16:54:12Z retry.go:99: Returning due to fatal error: FatalError{Underlying: error while running command: exec: "tofu": executable file not found in $PATH; }
| destroy.go:11:
| Error Trace: /root/go/pkg/mod/github.com/gruntwork-io/terratest@v0.46.11/modules/terraform/destroy.go:11
| /opt/hostedtoolcache/go/1.21.6/x64/src/runtime/panic.go:523
| /opt/hostedtoolcache/go/1.21.6/x64/src/testing/testing.go:999
| /root/go/pkg/mod/github.com/gruntwork-io/terratest@v0.46.11/modules/terraform/apply.go:15
| /mnt/c/repos/terraform-templates-deployment/terraform/tests/myTest.go:48
| Error: Received unexpected error:
| FatalError{Underlying: error while running command: exec: "tofu": executable file not found in $PATH; }
| Test: MyTestFunction1
| --- FAIL: MyTestFunction1 (0.00s)
| FAIL
| exit status 1

Versions

• Terratest version: v0.46.11
• Environment details : ubuntu 22.04

** Additional **
I don't want to use tofu. I want to use terraform. I tried installing terraform as part of the Github action workflow, but that does not make any difference.