updated the deploy function and some minimal styling stuff

deploy.sh

@@ -1,19 +1,22 @@
-!#bin/bash
+#!/bin/bash
 BUILD_DIR="/root"
-# move sludge.db sqlite file
-mv $BUILD_DIR/build/sludge.db $BUILD_DIR/sludge.db
+
+# find newest zip file and extract version
+NEWEST_ZIP="$(find "$BUILD_DIR" -maxdepth 1 -name "*.zip" -type f -printf '%T@ %p\n' | sort -rn | head -n 1 | cut -d' ' -f2)"
+VERSION="$(basename -s .zip "$NEWEST_ZIP" | cut -d' ' -f2)"
+
+# move sludge.db sqlite file with versioned backup name
+cp "$BUILD_DIR/build/sludge.db" "$BUILD_DIR/sludge.db.$VERSION"
 
 # remove build folder
-rm -rf $BUILD_DIR/build/
+rm -rf "$BUILD_DIR/build/"
 
-# remove old build zip
-rm -- "$(ls -rt $BUILD_DIR/*.zip | head -n 1)"
-
-# unzip new build zip
-unzip *.zip
+# unzip newest zip file
+unzip "$NEWEST_ZIP"
 
 # move db file back
-mv $BUILD_DIR/sludge.db $BUILD_DIR/build/sludge.db
+cp "$BUILD_DIR/sludge.db.$VERSION" "$BUILD_DIR/build/sludge.db"
 
 # restart sludge webserver
-sudo systemctl restart sludge-info
+sudo systemctl restart sludge-info
+