Step 1: Navigate to the Game Panel and Login
Step 2: Navigate to the File Manager Tab
Step 3: Navigate to this File Pathway: (/home/container/garrysmod/cfg/server.cfg)
Step 4: Set Your Server Name
Note: Make sure you don't remove the quotation marks when setting your server name.
Step 5: Save Your server.cfg File/Restart Your Server
Save your server.cfg file and restart your server.