Improve the installation script

scripts/install.sh

@@ -1,16 +1,13 @@
 #!/bin/bash
+appDir=$(dirname $(dirname $0))
 destinationDir=$(pwd)
 tempDir=$(mktemp -d)
-sourceDir="."
 
-cd $(dirname $0)
-cd ..
-
-rsync -a --delete $sourceDir/ $tempDir
+rsync -a --delete $appDir/ $tempDir
 
 # Cleaning up the built website
 find $tempDir \
-    -mindepth 1 -and \
+    -mindepth 1 -maxdepth 1 -and \
     -name "*" -and \
     -not \( \
         \( \
@@ -26,7 +23,7 @@ find $tempDir \
 
 # Cleaning up the destination directory
 find $destinationDir \
-    -mindepth 1 -and \
+    -mindepth 1 -maxdepth 1 -and \
     -name "*" -and \
     -not -name ".env" \
     -exec rm -rf {} +
@@ -37,4 +34,4 @@ rsync -a $tempDir/ $destinationDir
 # Installing the website
 cd $destinationDir
 composer install
-./vendor/bin/sake dev/build
+composer exec -- sake dev/build