feat: add output export for Terraform apply action

terraform-apply/README.md

@@ -12,18 +12,26 @@ Apply Terraform configuration files using the official Terraform CLI.
 | `workspace` | No | `""` | Terraform workspace to select |
 | `jfrog-token` | No | `""` | JFrog Artifactory token for the Terraform provider registry (`TF_TOKEN_schmalz_jfrog_io`) |
 
+## Outputs
+
+All Terraform outputs are automatically exported after apply. They are accessible on the calling step via `steps.<id>.outputs.<terraform-output-name>`. Complex types (lists, maps) are JSON-encoded.
+
 ## Usage
 
 ```yaml
 - uses: https://schmalz-git.git.onstackit.cloud/schmalz/shared-actions/terraform-apply@terraform-apply-v1
+  id: tf-apply
   with:
     workspace: stage
     var-file: stage.tfvars
     jfrog-token: ${{ secrets.JFROG_TOKEN }}
+
+- run: echo ${{ steps.tf-apply.outputs.s3_bucket_name }}
 ```
 
 ## Notes
 
 - Runs `terraform init`, selects the workspace (if provided), and applies with `-auto-approve`.
 - Sets `TF_TOKEN_schmalz_jfrog_io` on both `init` and `apply` steps if `jfrog-token` is provided.
-- If `var-file` is provided, it is passed as `-var-file` to the apply command.
+- If `var-file` is provided, it is passed as `-var-file` to the apply command.
+- All Terraform outputs are written to `$GITHUB_OUTPUT` after apply — no separate `terraform output` step needed.

terraform-apply/action.yml

@@ -61,4 +61,13 @@ runs:
         if [ -n "$VAR_FILE" ]; then
           ARGS="$ARGS -var-file=$VAR_FILE"
         fi
-        terraform -chdir="$TF_DIR" apply $ARGS
+        terraform -chdir="$TF_DIR" apply $ARGS
+
+    - name: Export Terraform Outputs
+      shell: bash
+      env:
+        TF_DIR: ${{ inputs.terraform-dir }}
+      run: |
+        terraform -chdir="$TF_DIR" output -json | \
+          jq -r 'to_entries[] | "\(.key)=\(.value.value | if type == "string" then . else tojson end)"' \
+          >> "$GITHUB_OUTPUT"