Proxy component inputs with variables to job

Even though it is against the CI/CD component best practices this always
for a smoother transition from the Terraform CI/CD templates.
We can remove that proxy again in a later major version.

templates/apply.yml

@@ -51,9 +51,9 @@ spec:
 '$[[ inputs.as ]]':
   stage: $[[ inputs.stage ]]
   environment:
-    name: $[[ inputs.state_name ]]
+    name: $TF_STATE_NAME
     action: start
-  resource_group: $[[ inputs.state_name ]]
+  resource_group: $TF_STATE_NAME
   rules:
     - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && "$[[ inputs.auto_apply ]]" == "true"'
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
@@ -61,7 +61,7 @@ spec:
   cache:
     key: "$__CACHE_KEY_HACK"
     paths:
-      - $[[ inputs.root_dir ]]/.terraform/
+      - $TF_ROOT/.terraform/
   variables:
     # FIXME: work around to make slashes work in `cache:key`. see https://gitlab.com/gitlab-org/gitlab/-/issues/439898
     __CACHE_KEY_HACK: "$[[ inputs.root_dir ]]"

templates/delete-state.yml

@@ -20,10 +20,12 @@ spec:
 
 '$[[ inputs.as ]]':
   stage: $[[ inputs.stage ]]
-  resource_group: $[[ inputs.state_name ]]
+  resource_group: $TF_STATE_NAME
   image: curlimages/curl:latest
+  variables:
+    TF_STATE_NAME: $[[ inputs.state_name ]]
   script:
-    - curl --request DELETE -u "gitlab-ci-token:$CI_JOB_TOKEN" "$CI_API_V4_URL/projects/$CI_PROJECT_ID/terraform/state/$[[ inputs.state_name ]]"
+    - curl --request DELETE -u "gitlab-ci-token:$CI_JOB_TOKEN" "$CI_API_V4_URL/projects/$CI_PROJECT_ID/terraform/state/$TF_STATE_NAME"
   rules:
     - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
     - when: manual

templates/destroy.yml

@@ -51,16 +51,16 @@ spec:
 '$[[ inputs.as ]]':
   stage: $[[ inputs.stage ]]
   environment:
-    name: $[[ inputs.state_name ]]
+    name: $TF_STATE_NAME
     action: stop
-  resource_group: $[[ inputs.state_name ]]
+  resource_group: $TF_STATE_NAME
   rules:
     - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && "$[[ inputs.auto_destroy ]]" == "true"'
     - when: manual
   cache:
     key: "$__CACHE_KEY_HACK"
     paths:
-      - $[[ inputs.root_dir ]]/.terraform/
+      - $TF_ROOT/.terraform/
   variables:
     # FIXME: work around to make slashes work in `cache:key`. see https://gitlab.com/gitlab-org/gitlab/-/issues/439898
     __CACHE_KEY_HACK: "$[[ inputs.root_dir ]]"

templates/fmt.yml

@@ -61,7 +61,7 @@ spec:
   cache:
     key: "$__CACHE_KEY_HACK"
     paths:
-      - $[[ inputs.root_dir ]]/.terraform/
+      - $TF_ROOT/.terraform/
   variables:
     # FIXME: work around to make slashes work in `cache:key`. see https://gitlab.com/gitlab-org/gitlab/-/issues/439898
     __CACHE_KEY_HACK: "$[[ inputs.root_dir ]]"

templates/plan.yml

@@ -60,9 +60,9 @@ spec:
     # See: https://docs.gitlab.com/ee/ci/yaml/#artifactspublic
     public: false
     paths:
-      - $[[ inputs.root_dir ]]/plan.cache
+      - $TF_ROOT/plan.cache
     reports:
-      terraform: $[[ inputs.root_dir ]]/plan.json
+      terraform: $TF_ROOT/plan.json
   rules:
     - if: $CI_PIPELINE_SOURCE == "merge_request_event"
     - if: $CI_OPEN_MERGE_REQUESTS  # Don't add it to a *branch* pipeline if it's already in a merge request pipeline.
@@ -71,7 +71,7 @@ spec:
   cache:
     key: "$__CACHE_KEY_HACK"
     paths:
-      - $[[ inputs.root_dir ]]/.terraform/
+      - $TF_ROOT/.terraform/
   variables:
     # FIXME: work around to make slashes work in `cache:key`. see https://gitlab.com/gitlab-org/gitlab/-/issues/439898
     __CACHE_KEY_HACK: "$[[ inputs.root_dir ]]"

templates/validate.yml

@@ -55,7 +55,7 @@ spec:
   cache:
     key: "$__CACHE_KEY_HACK"
     paths:
-      - $[[ inputs.root_dir ]]/.terraform/
+      - $TF_ROOT/.terraform/
   variables:
     # FIXME: work around to make slashes work in `cache:key`. see https://gitlab.com/gitlab-org/gitlab/-/issues/439898
     __CACHE_KEY_HACK: "$[[ inputs.root_dir ]]"