Added default argument values to the deploy script so it can be executed on VM...

Added default argument values to the deploy script so it can be executed on VM boot to automatically start the latest release from the master branch.

deploy.sh

@@ -2,16 +2,16 @@
 # $1: port number to run the server
 # $2: filename to log output
 
+PORT="${1:-8080}"
+LOG="${2:-out.log}"
+
 # Get latest HEAD
 git pull origin master
 # Build project
 stack build
 # Kill previous process
 pkill javawlp
-# Backup previous log
-if [ -f $2 ]
-then
-    mv $2 "$2".backup
-fi
- # Run server
-nohup stack exec javawlp -- --runServer -p $1 > $2 &
+# Backup previous log if it exists by appending it to a backup file.
+[[ -f $LOG ]] && cat $LOG >> "$LOG".backup
+# Run server
+nohup stack exec javawlp -- --runServer -p $PORT > $LOG &