Magento 2 || Fixing file and folder permissions - mpaz-redstage/magento-snippets GitHub Wiki
find . -type f -exec chmod 644 {} \; && find . -type d -exec chmod 755 {} \; && find ./var -type d -exec chmod 777 {} \; && find ./pub/media -type d -exec chmod 777 {} \; && find ./pub/static -type d -exec chmod 777 {} \; && chmod 777 ./app/etc && chmod 644 ./app/etc/*.xml && chmod +x bin/magento