DevOps Prompt Library

I am encountering a build error on Vercel with my Next.js project.

Here is the build log output:
```
[PASTE BUILD LOG HERE]
```

Here is my `package.json`:
```json
[PASTE PACKAGE.JSON HERE]
```

Please analyze the log and tell me:
1. What is the specific error causing the build to fail?
2. Is this related to a missing dependency, a type error, or an environment variable?
3. What exact steps (command line or code change) should I verify to fix this?

I need to write a Row Level Security (RLS) policy for a Supabase table named "[TABLE_NAME]".

Requirement:
- Users can only read their own data (where user_id matches auth.uid()).
- Users can insert rows but user_id must automatically allow the authenticated user.
- [ADD_OTHER_REQUIREMENTS]

CRITICAL SECURITY RULES:
1. Do NOT use "USING (true)" or "WITH CHECK (true)".
2. Ensure the policy specifically references "auth.uid()".
3. Provide the SQL command to enable RLS first.

Please generate the SQL for this policy.

Please scan the following code snippets and identify all environment variables used (e.g., process.env.VAR_NAME).

Code:
```javascript
[PASTE CODE SNIPPETS HERE]
```

Output format:
1. List of found environment variables.
2. For each variable, guess if it should be a secret (like API keys) or public (like NEXT_PUBLIC_).
3. Generate a template `.env.local` file content.

Here is my current Dockerfile for a Next.js application.
```dockerfile
[PASTE DOCKERFILE]
```

Please optimize this Dockerfile for production:
1. Use multi-stage builds (deps, builder, runner).
2. Use "standalone" output mode to reduce image size.
3. Ensure it runs as a non-root user (security).
4. Explain the changes you made.