refactor .dockerignore; fix

build-archiso/run.sh

@@ -22,11 +22,11 @@ function isEmptyDir() {
   # arg $1: directory to check
 
   if [ -z "$(find "${1}" -maxdepth 0 -type d -empty 2>/dev/null)" ]; then
-    # "Empty directory"
-    return 0
-  else
     # echo "Not empty or NOT a directory"
     return 1
+  else
+    # "Empty directory"
+    return 0
   fi
 }
 

build-pkg/.dockerignore

@@ -0,0 +1,3 @@
+*
+!Dockerfile
+!run.sh