fix docker-entrypoint.sh

packages/app/docker/docker-entrypoint.sh

@@ -4,11 +4,11 @@ set -e
 
 # Support `FILE_UPLOAD=local`
 mkdir -p /data/uploads
-if [ ! -e "$appDir/public/uploads" ]; then
-  ln -s /data/uploads $appDir/public/uploads
+if [ ! -e "./public/uploads" ]; then
+  ln -s /data/uploads ./public/uploads
 fi
 
 chown -R node:node /data/uploads
-chown -h node:node $appDir/public/uploads
+chown -h node:node ./public/uploads
 
 gosu node $@