@sharonyue No, I don't think so. It's unusual for avatar images to have transparent backgrounds 🙂
Nodebb Installation Problem
All is Installed.
But Nodebb is not visible.
O.S : Ubuntu 13.10
[cluster] Spinning up another process...
15/1 13:45  - info: Time: Thu Jan 15 2015 13:45:58 GMT-0500 (EST)
15/1 13:45  - info: Initializing NodeBB v0.6.0
15/1 13:46  - error: Error: Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED
at RedisClient.on_error (/root/nodebb/node_modules/redis/index.js:185:24)
at Socket.<anonymous> (/root/nodebb/node_modules/redis/index.js:95:14)
at Socket.EventEmitter.emit (events.js:95:17)
at process._tickCallback (node.js:415:13)
3 restarts in 10 seconds, most likely an error on startup. Halting.
That would imply that your redis server is not running,
Run this command to see if it is live:
service redis status
redis: unrecognized service
The right command is service redis-server status.
redis-server start/running, process 1791
For me is the hosting.
128 MB of Ram are very few.
When i active plugin or do post ext ext, the site is very slow and crash.
Oh yeah just realized reading it again sorry
Check out this is you need better hosting
Docker NodeBB v0.5Unsolved General Discussion