remove VOLUME directive as causes different permission issues on creation

Author: ToshY

docs/non-root-user.md

@@ -31,7 +31,7 @@ You can apply the following patches to your `Dockerfile`, `compose.override.yaml
 +
  WORKDIR /app
 
- VOLUME /app/var/
+- VOLUME /app/var/
 @@ -46,6 +55,12 @@
  COPY --link --chmod=755 frankenphp/docker-entrypoint.sh /usr/local/bin/docker-entrypoint
  COPY --link frankenphp/Caddyfile /etc/frankenphp/Caddyfile
@@ -40,7 +40,7 @@ You can apply the following patches to your `Dockerfile`, `compose.override.yaml
 +    groupadd -g $PGID $GROUP; \
 +    useradd -u $PUID -g $PGID --no-create-home $USER; \
 +    mkdir -p var/cache var/log; \
-+    chown -R $PUID:$PGID /data/ /config/ var/cache var/log
++    chown -R $PUID:$PGID /data/ /config/ var/
 +
  ENTRYPOINT ["docker-entrypoint"]
 
@@ -78,7 +78,7 @@ You can apply the following patches to your `Dockerfile`, `compose.override.yaml
  	composer run-script --no-dev post-install-cmd; \
 -	chmod +x bin/console; sync;
 +	chmod +x bin/console; sync; \
-+	chown -R $PUID:$PGID var/cache var/log
++	chown -R $PUID:$PGID var/
 +
 +USER $USER
 ```