The other container we will be using is PHP-FPM. You can now see in the browser, that we have nginx up and running on port 8080. Right click on this file and select compose up.Īfter that, you can see in the terminal that docker compose was called and a new container was created. In this case, we will map containers port 80 to the port 8080 on Docker host (the computer running the docker). We also have to define port mapping, because we want this service to be available from outside Docker. We defined a service called nginx, which will be using the docker image nginx:latest-alpine. In Docker Compose, you define the so-called "services", which will be represented by containers running on docker. Inside it, create a file named docker-compose.yml and write this inside it. Let's go and use this one.Ĭreate a folder named PHP with Nginx and open it in Visual Studio Code. You can find more about Alpine in the previous article. Just like with PHP, Nginx has an Alpine variant. This is a default image that is a safe bet, if you do not know which one to use. Nginx has Docker images with many different tags, but we are only interested in two core ones. Other examples of container orchestration tools are Docker Swarm, Service Fabric and Kubernetes. These systems are quite complex and they are outside the scope of this article. You can imagine this management as restart some faulty container, scale them based on cpu or other constraints and similar operations. They continuously watch the state of containers and adapt it, so it always matches the desired state described in Declarative Configuration. The job of these orchestration technologies is to manage individual containers for you. We will see examples of them later in the article. Docker Compose is using YAML files, which are usually named docker-compose.yml. In these, you describe your application as a collection of docker containers in some Declarative Configuration file. Container Orchestrationĭocker Compose is example of a so called " Container Orchestration" technology. It will be a container for PHP-FPM and Nginx. In this article, we will be using Docker Compose to create 2 connected containers. In case of PHP, you can define your website as a collection of containers, each one serving a different purpose. Docker Composeĭocker Compose is a tool, that allows us to define and run multi-container Docker applications. You can see all the files we will be creating on github. In this article, we will create a multi-container application using PHP and Nginx with the help of Docker Compose. If you did not read it yet, I strongly recommend reading it before, since you'll have more context for this one. In the previous article, we talked about Docker and created a simple Docker Image with PHP inside Visual Studio Code.
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