Fix issue #6685: [Feature]: Add Explanation in FAQ for Handling Memory Errors in Docker

[openhands-agent]

This pull request fixes #6685.

The issue has been successfully resolved because the changes directly address all aspects of the original problem:

1. The FAQ now provides clear step-by-step instructions for increasing Docker container memory limits through Docker Desktop settings, which was a key requirement in the original issue.

2. The documentation includes multiple technical approaches to solving OOM errors:

   • Docker Desktop UI configuration with specific steps
   • docker-compose.yml configuration examples
   • Command-line options with concrete examples

3. The implementation includes visual guidance through clear formatting and code blocks, making it easy for users to follow the instructions.

4. The FAQ includes best practices and monitoring sections that help users prevent future OOM issues by properly planning and monitoring their container resources.

5. The documentation links to official Docker resources as requested in the original issue.

The changes are comprehensive and actionable, providing users with multiple solutions to resolve OOM errors while running OpenHands in Docker containers. The addition of this documentation directly solves the original problem by giving users the information they need to configure their Docker environments appropriately and avoid memory-related issues.

Automatic fix generated by OpenHands 🙌

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To run this PR locally, use the following command:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:b76a09a-nikolaik   --name openhands-app-b76a09a   docker.all-hands.dev/all-hands-ai/openhands:b76a09a