Fix: Devcontainer permission (#3102)

# Description of Changes

Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

.devcontainer/devcontainer.json

@@ -6,7 +6,7 @@
         // Sets the run context to one level up instead of the .devcontainer folder.
         "context": "..",
         // Update the 'dockerFile' property if you aren't using the standard 'Dockerfile' filename.
-        "dockerfile": "../Dockerfile.dev",
+        "dockerfile": "../Dockerfile.dev"
     },
     // Use 'forwardPorts' to make a list of ports inside the container available locally.
     "appPort": [8080],
@@ -110,5 +110,5 @@
     // Uncomment to connect as an existing user other than the container default. More info: https://aka.ms/dev-containers-non-root.
     "remoteUser": "devuser",
     "shutdownAction": "stopContainer",
-    "postStartCommand": "chmod +x scripts/init-setup.sh && ./scripts/init-setup.sh"
+    "postStartCommand": "./scripts/init-setup.sh"
 }