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+# 🛠️ Prepare Deployment File Action
+
+Automatically process your Docker Compose or Stack deployment files by substituting placeholders with values from GitHub Action inputs, environment variables, and secrets. 🚀
+
+---
+
+## ✨ Features
+
+- 📄 **Flexible file processing**: Supports Docker Compose and Stack files.
+- 🔄 **Dynamic substitutions**: Replace placeholders with inputs, environment variables, and secrets.
+- 📋 **Detailed debug logs**: Clearly see each substitution step for easy troubleshooting.
+- 📦 **Outputs processed file**: Ready-to-use deployment file for seamless deployments.
+
+---
+
+## 📥 Inputs
+
+| Input           | Description                                                  | Required |
+|-----------------|--------------------------------------------------------------|----------|
+| `compose_file`  | Deployment file to process (e.g., `docker-compose.yml`)      | ✅ Yes   |
+| `stack_name`    | Stack name to substitute in deployment file                  | ✅ Yes   |
+| `org_name`      | Organization name to substitute in deployment file           | ✅ Yes   |
+| `repo_name`     | Repository name to substitute in deployment file             | ✅ Yes   |
+| `git_sha`       | Git short SHA to substitute in deployment file               | ✅ Yes   |
+
+---
+
+## 📤 Outputs
+
+| Output             | Description                                 | Example                         |
+|--------------------|---------------------------------------------|---------------------------------|
+| `processed_file`   | Path to the processed deployment file       | `docker-compose.processed.yml`  |
+
+---
+
+## 🛠️ Example Usage
+
+Here's how you can integrate this action into your workflow:
+
+```yaml
+- name: Prepare Deployment File 🛠️
+  id: prepare-deploy
+  uses: your-org/prepare-deployment-file@main
+  with:
+    compose_file: docker-compose.yml
+    stack_name: my-awesome-stack
+    org_name: my-org
+    repo_name: my-repo
+    git_sha: ${{ github.sha }}
+
+- name: Deploy 🚀
+  run: |
+    echo "Deploying using processed file: ${{ steps.prepare-deploy.outputs.processed_file }}"
+```
+
+---
+
+## 🧑‍💻 How It Works
+
+This action performs the following steps:
+
+| Step | Description |
+|------|-------------|
+| 📄   | Copies your original deployment file to a new processed file |
+| 🔄   | Substitutes placeholders with values from `.env` file (if present) |
+| 🔄   | Substitutes placeholders with GitHub Action inputs (`stack_name`, `org_name`, `repo_name`, `git_sha`) |
+| 🔄   | Substitutes placeholders with environment variables and secrets available in GitHub Actions |
+| 📋   | Provides detailed debug logs of each substitution step |
+| 📦   | Outputs the path to the processed deployment file |
+
+---
+
+## 📖 Debugging & Logs
+
+Detailed debug logs are provided at every substitution step, making troubleshooting easy:
+
+```
+DEBUG: Processing deployment file: docker-compose.yml
+DEBUG: Found .env file. Substituting variables from .env.
+DEBUG: Replacing ${MY_ENV_VAR} with value from .env
+DEBUG: Replacing ${STACK_NAME} with GitHub Action input value 'my-stack'
+...
+DEBUG: Final processed deployment file path:
+docker-compose.processed.yml
+```
+
+---
+
+## ⚠️ Requirements
+
+- Your deployment file should contain placeholders in the format `${PLACEHOLDER_NAME}`.
+- Optional `.env` file at the repository root for additional substitutions.
+
+---
+
+## 📜 License
+
+This action is open-source software licensed under the MIT license.
+
+---
+
+Happy deploying! 🎉
+
+— **Grand**