Try to move ARG

Author: Munkkeli

Dockerfile

@@ -1,8 +1,8 @@
+FROM ghost:alpine
+
 # This will be set by the GitHub action to the folder containing this component.
 ARG FOLDER=/app
 
-FROM ghost:alpine
-
 COPY --chown=1000:1000 . /app
 
 # Copy Diploi storage adapters to the Ghost core