docs: fix README logo filename

README.md

@@ -25,6 +25,25 @@ Built for people who run real systems — not toy setups.
 
 ---
 
+## 🛠 Tech Stack
+
+DockerVault is built using simple, reliable components:
+
+- **Python 3.10+** – core language
+- **PyYAML** – parsing Docker Compose files
+- **argparse** – CLI interface
+- **pip / venv** – environment management
+
+---
+
+### 🔧 Designed for
+
+- Linux systems (Ubuntu, Debian, Unraid environments)
+- Docker Compose based setups
+- CLI-first workflows
+
+---
+
 ## 🧠 Why DockerVault?
 
 Most backup setups fail because: