Terraform Cloud deploy with hard-coded workspace fails

[johnseekins-pathccm]

Problem description

Trying to run an apply with dflook/terraform-apply@v1 and it consistently fails. Both fmt-check and validate actions do work correctly on the same repository.

I've tried forcing workspace to an empty string and leaving the variable out with similar results.

   ╷
  │ Error: failed to create backend alias to target "". The hostname is not in the correct format.
  │ 
  │ 
  ╵
  
  ╷
  │ Error: Invalid workspaces configuration
  │ 
  │   on service.tf line 7, in terraform:
  │    7:   cloud {
  │ 
  │ Specified workspace "name" conflicts with TF_WORKSPACE environment
  │ variable.

Actual offending Terraform code:

terraform {
  cloud {
    organization = "***"

    workspaces {
      name = "workspace-name"
    }
  }

Terraform version

1.6.1 (locally), 1.5.7 (remote)

Backend

Terraform Cloud

Workflow YAML

name: Terraform Apply

inputs:
  filter-paths:
    required: true
    type: string
  terraform-path:
    required: false
    default: terraform/
    type: string
  terraform-token:
    required: true
    type: string

runs:
  using: composite
  steps:
    - name: Checkout
      uses: actions/checkout@v4
      with:
        fetch-depth: 0
    - name: terraform files filter
      uses: tj-actions/changed-files@v39
      id: terraform-files
      with:
        files: ${{ inputs.filter-paths }}
    - name: Apply Terraform
      if: "steps.terraform-files.outputs.any_changed"
      uses: dflook/terraform-apply@v1
      with:
        path: ${{ inputs.terraform-path }}
        auto_approve: true
        workspace: ""
      env:
        TERRAFORM_CLOUD_TOKENS: app.terraform.io=${{ inputs.terraform-token }}

### Workflow log

```shell
Run dflook/terraform-apply@v1
  with:
    path: terraform/
    auto_approve: true
    parallelism: 0
    destroy: false
  env:
    TERRAFORM_CLOUD_TOKENS: app.terraform.io=***
/usr/bin/docker run --name danielflookterraformgithubactionssha256445be2ccdfef4d1d3bd258f00582319c886969b76c1b848925022f8cbe4c6c7b_5fa9b7 --label 94351b --workdir /github/workspace --rm -e "TERRAFORM_CLOUD_TOKENS" -e "INPUT_PATH" -e "INPUT_AUTO_APPROVE" -e "INPUT_WORKSPACE" -e "INPUT_BACKEND_CONFIG" -e "INPUT_BACKEND_CONFIG_FILE" -e "INPUT_VARIABLES" -e "INPUT_VAR" -e "INPUT_VAR_FILE" -e "INPUT_PARALLELISM" -e "INPUT_LABEL" -e "INPUT_TARGET" -e "INPUT_REPLACE" -e "INPUT_DESTROY" -e "HOME" -e "GITHUB_JOB" -e "GITHUB_REF" -e "GITHUB_SHA" -e "GITHUB_REPOSITORY" -e "GITHUB_REPOSITORY_OWNER" -e "GITHUB_REPOSITORY_OWNER_ID" -e "GITHUB_RUN_ID" -e "GITHUB_RUN_NUMBER" -e "GITHUB_RETENTION_DAYS" -e "GITHUB_RUN_ATTEMPT" -e "GITHUB_REPOSITORY_ID" -e "GITHUB_ACTOR_ID" -e "GITHUB_ACTOR" -e "GITHUB_TRIGGERING_ACTOR" -e "GITHUB_WORKFLOW" -e "GITHUB_HEAD_REF" -e "GITHUB_BASE_REF" -e "GITHUB_EVENT_NAME" -e "GITHUB_SERVER_URL" -e "GITHUB_API_URL" -e "GITHUB_GRAPHQL_URL" -e "GITHUB_REF_NAME" -e "GITHUB_REF_PROTECTED" -e "GITHUB_REF_TYPE" -e "GITHUB_WORKFLOW_REF" -e "GITHUB_WORKFLOW_SHA" -e "GITHUB_WORKSPACE" -e "GITHUB_ACTION" -e "GITHUB_EVENT_PATH" -e "GITHUB_ACTION_REPOSITORY" -e "GITHUB_ACTION_REF" -e "GITHUB_PATH" -e "GITHUB_ENV" -e "GITHUB_STEP_SUMMARY" -e "GITHUB_STATE" -e "GITHUB_OUTPUT" -e "GITHUB_ACTION_PATH" -e "RUNNER_OS" -e "RUNNER_ARCH" -e "RUNNER_NAME" -e "RUNNER_ENVIRONMENT" -e "RUNNER_TOOL_CACHE" -e "RUNNER_TEMP" -e "RUNNER_WORKSPACE" -e "ACTIONS_RUNTIME_URL" -e "ACTIONS_RUNTIME_TOKEN" -e "ACTIONS_CACHE_URL" -e GITHUB_ACTIONS=true -e CI=true --entrypoint "/entrypoints/apply.sh" -v "/var/run/docker.sock":"/var/run/docker.sock" -v "/home/runner/work/_temp/_github_home":"/github/home" -v "/home/runner/work/_temp/_github_workflow":"/github/workflow" -v "/home/runner/work/_temp/_runner_file_commands":"/github/file_commands" -v "/home/runner/work/hubot/hubot":"/github/workspace" danielflook/terraform-github-actions@sha256:445be2ccdfef4d1d3bd258f00582319c886969b76c1b848925022f8cbe4c6c7b
Installing Terraform
  gpg: Signature made Tue Oct 10 16:10:49 2023 UTC
  gpg:                using RSA key 374EC75B485913604A831CC7C820C6D5CD27AB87
  gpg: Good signature from "HashiCorp Security (hashicorp.com/security) <security@hashicorp.com>" [ultimate]
  terraform_1.6.1_linux_amd64.zip: OK
  Terraform version not specified, using the latest version
  Switched to Terraform v1.6.1
  Detected cloud backend
Initializing Terraform
  
  Initializing Terraform Cloud...
  ╷
  │ Error: failed to create backend alias to target "". The hostname is not in the correct format.
  │ 
  │ 
  ╵
  
  ╷
  │ Error: Invalid workspaces configuration
  │ 
  │   on service.tf line 7, in terraform:
  │    7:   cloud {
  │ 
  │ Specified workspace "name" conflicts with TF_WORKSPACE environment
  │ variable.
  │ 
  │ The 'workspaces' block configures how Terraform CLI maps its workspaces for
  │ this single
  │ configuration to workspaces within a Terraform Cloud organization. Two
  │ strategies are available:
  │ 
  │ tags - A set of tags used to select remote Terraform Cloud
  │ workspaces to be used for this single
  │ configuration. New workspaces will automatically be tagged with these tag
  │ values. Generally, this
  │ is the primary and recommended strategy to use.  This option conflicts with
  │ "name".
  │ 
  │ name - The name of a single Terraform Cloud workspace to be
  │ used with this configuration.
  │ When configured, only the specified workspace can be used. This option
  │ conflicts with "tags"
  │ and with the TF_WORKSPACE environment variable.

Has debug logging been enabled?

• Yes, the ACTIONS_STEP_DEBUG secret was set to true when capturing the workflow log above.