Sample compose configuration for a php application
Throw your application code in /app and your application will be available at: localhost:80/app when the container starts up.
A simple makefile has been included for automating the docker build.
The following will compile your docker container and tag it sample/php-app:latest
make build
You can bring up your compose environment with docker-compose up -d which will bring up all containers on a private network in a detached state (not attached to the terminal) You can view the logs of one of your containers with docker-compose logs php or docker-compose logs mysql if you want to follow the log you can add a -f flag like so docker-compose logs -f php
This php setup uses a persistent volume so you data survives restarts. The container maps a local data folder into the container so all data is saved. If you want to clear all data simply shut down the container docker-compose down clear the folder and then docker-compose up -d
I put this together with an automatic seed data load. If you place a file called test_db.sql in ./seed_data it will be loaded on startup
You can access your database from outside the container on localhost:3306 due to the port mapping in docker-compose.yml and inside a container on mysql:3306
I included a redis server for fun, you can connect to it from outside the container on localhost:6379 and from inside a container at redis:6379
To get into a shell in the container, you can run docker-compose exec php-app sh
I use version 2, there is a newer version 3 but I don't know it as well :( https://docs.docker.com/compose/compose-file/compose-file-v2
Here is a reference on the commands available to a Dockerfile. Think of it as instructions on how to build the OS and the final image. You can install things, copy files in, run commands, set variables. Once your image is built, it is immutable. Every time you start it up it will be the same. https://docs.docker.com/engine/reference/builder/