I will setup a very simple php page and debug it using xdebug and PhpStorm. Source files can be found here: in folder recipe-09 https://github.com/ikknd/docker-study 1. Create "Dockerfile" file in "docker" folder: Execute this command from docker folder to build image: docker build -t php-xdebug-custom -f Dockerfile . 2. Create docker-compose.yml file in "docker" folder: Here I use " " image instead of " " php-xdebug-custom php:7.2-fpm 3. Modify php.ini file with xdebug settings: 4. Configure server in PhpStorm: File -> Settings -> Languages & Frameworks -> PHP -> Servers Add a new server using + icon, and configure like on the following screenshot: Make sure to check "Use path mappings" and map php folder to " " /var/www/myapp 5. Configure PHP remote debugger in PhpStorm: Run -> Edit configurations -> PHP Remote Debug Add a new configuration and give it values like on the following screenshot: 6. Select debug configuration in PhpStorm debug panel 7. Go to /var/www/docker-study.loc/recipe-09/docker/ and execute: docker-compose up -d If I now try in browser, I will see results from index.php file. myapp.loc/ I can set a breakpoint, start listening for connections in PhpStorm debug panel, and reload page. Happy debugging!
