Improve on user privilege management

Instead of creating an image with the user just run the container with the flag --user

Author: dianjuar

docker-compose.yml

@@ -15,10 +15,8 @@ services:
      - wp_server
 
   wp_server:
-    build:
-      context: ./docker-images/php/
-      args:
-        UID: ${UID}
+    build: ./docker-images/php/
+    user: ${UID}:www-data
     container_name: wp_server
     volumes:
       - ./www/wp_files/:/www

docker-images/php/Dockerfile

@@ -74,17 +74,11 @@ wp --allow-root --version
 # Maybe on the command gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$WORDPRESS_CLI_GPG_KEY"; \ you will 
 # have an error, an issue opened in https://github.com/asdf-vm/asdf-nodejs/issues/38#issuecomment-298686787 suggest
 # that use hkp://ipv4.pool.sks-keyservers.net:80 instead of ha.pool.sks-keyservers.net
-# NOT TESTED
 
 # Install mysql client
 RUN apk update \
 	apk add mysql-client 
 
 WORKDIR /www
 
-ENV PAGER more
-
-ARG UID
-
-RUN adduser -D -u "$UID" same_as_host -G www-data
-USER same_as_host
+ENV PAGER more