update readme

README.md

@@ -19,19 +19,19 @@ Quick start
 1. Place challenge files in ./challenge
 2. Build and start the lab (background):
    ```
-    docker compose up --build -d
+   docker compose up --build -d
    ```
 3. Enter an interactive shell inside the running container:
    ```
-    docker compose exec exploit-lab /bin/bash
+   docker compose exec exploit-lab /bin/bash
    ```
    (or as mapped host user)
    ```
-    docker compose exec --user 1000:1000 exploit-lab /bin/bash
+   docker compose exec --user 1000:1000 exploit-lab /bin/bash
    ```
 4. Stop and remove containers:
    ```
-    docker compose down
+   docker compose down
    ```
 
 Notes about safety & file locations