Container on restart fails to start client, throws "Failed to create batchmode window: Success" error

[zhliau]

Resolved by deleting the container and recreating it. I thought I solved this by restarting xvfb? Might be something to do with a lingering pid or socket or something.

Steps to reproduce

• Enable Modsync by setting USE_MODSYNC=true in container
• Start up dedicated client container in detached mode (docker-compose up -d), and wait until it stabilizes (starts pinging /fika/dedicated/status)
• Restart the container by docker-compose restart or similar. Do NOT stop the container, that doesn't seem to have the same effect
• See that the X server stops becoming available, and the client fails to start with error Failed to create batchmode window: Success

[zhliau]

This should have been fixed by 561b4fb66e2a17a62c185304c528959796b6e0af