PHP Dockerization Demo

How to Dockerize a PHP application in different environments

Materials for the article https://lohvynenko.com/en/blog/php-inside-docker-environment.html

Requirements

• Install Docker

• Install Docker Compose

• Install Minikube

• Install kubectl

Run PHP in Local Docker Environment

Launch local version with Docker Compose

docker compose up -d

Open URL http://localhost:8080/ You will see information about PHP provided by phpinfo() function

Stop containers and remove all related resources

docker compose down

Build Docker image with the source code

Build command with SOURCE_FOLDER build argument

docker build --force-rm=true \
    --tag="php-docker-env-demo-code" \
    --build-arg="SOURCE_FOLDER=/source" \
    --file="Dockerfile" --no-cache .

Authorize to Docker Registry (Docker Hub)

docker login -u <your-dockerhub-username> --password-stdin

Push Docker image to Docker Hub Registry

docker tag php-docker-env-demo-code <your-dockerhub-username>/php-docker-env-demo-code:latest
docker push <your-username>/php-docker-env-demo-code:latest

Public Docker image with the source code is available here https://hub.docker.com/r/luxurydab/php-docker-env-demo-code

Run PHP in Docker Swarm environment

Create a new Swarm cluster

docker swarm init --advertise-addr 127.0.0.1

Note: 127.0.0.1 is the manager IP address. You can use 127.0.0.1 to play on your local machine. Use the IP address of your server in Live / Production environment

Deploy Docker Swarm cluster

docker stack deploy --compose-file docker-stack.yml docker-swarm-demo

Open URL http://127.0.0.1/ You will see PHP page running in Docker Swarm

Remove services from Docker Swarm

docker service rm docker-swarm-demo_code docker-swarm-demo_nginx docker-swarm-demo_php

Leave the Docker Swarm

docker swarm leave --force

Run PHP in minikube (local Kubernetes) environment

Start minikube

minikube config set vm-driver docker
minikube start --cpus=2 --memory=2048 --alsologtostderr

Switch to minikube environment

eval $(minikube docker-env)

Deploy PHP to minikube environment

kubectl apply -f minikube.yaml

Get URL to nginx service

minikube service nginx --url

Stop and delete minikube

eval $(minikube docker-env -u)
minikube stop
minikube delete