Refactored logs to use a logs/ folder and also roll over after 10MB. … (#448)

# Changed
- Changed: Log files now roll (kavita, kavita1, etc) up to 5 files, each with a max of 10MB each. After all 5 files fill up, they will roll over. (Closes #446 )
=============================

* Refactored logs to use a logs/ folder and also roll over after 10MB. A maximum of 5 logs will persist (50MB of log data).

* Updated entrypoint to accommodate rolling logs

Co-authored-by: Chris Plaatjes <kizaing@gmail.com>

entrypoint.sh

@@ -46,6 +46,20 @@ else
 	ln -s /kavita/data/cache /kavita/cache
 fi
 
+if [ -d /kavita/data/logs ]
+then
+	if [ -d /kavita/logs ]
+	then
+		unlink /kavita/logs
+		ln -s /kavita/data/logs /kavita/logs
+	else
+		ln -s /kavita/data/logs /kavita/logs
+	fi
+else
+	mkdir /kavita/data/logs
+	ln -s /kavita/data/logs /kavita/logs
+fi
+
 if [ -d /kavita/data/stats ]
 then
 	if [ -d /kavita/stats ]
@@ -60,25 +74,6 @@ else
 	ln -s /kavita/data/stats /kavita/stats
 fi
 
-# Checks for the log file
-
-if test -f "/kavita/data/logs/kavita.log"
-then
-	rm /kavita/kavita.log
-	ln -s /kavita/data/logs/kavita.log /kavita/
-else
-	if [ -d /kavita/data/logs ]
-	then
-		echo "" > /kavita/data/logs/kavita.log || true
-		ln -s /kavita/data/logs/kavita.log /kavita/
-	else
-		mkdir /kavita/data/logs
-		echo "" > /kavita/data/logs/kavita.log || true
-		ln -s /kavita/data/logs/kavita.log /kavita/
-	fi
-
-fi
-
 chmod +x ./Kavita
 
 ./Kavita