Using a Containerized PHP Server

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Using a PHP Dev-Server inside a Container with a Dockerfile

To get started, let’s change the Dockerfile from the previous example to:

FROM php:7.2-cli

EXPOSE 8000
RUN mkdir /myproject
COPY index.php /myproject
WORKDIR /myproject
CMD ["php", "-S", "0.0.0.0:8000"]

Then run the command:

docker build -t myphpapp .

• Will rebuild the image and tag it again as myphpapp
• Will overwrite the old one
• Will copy the index.php to a new directory /myproject
• Will run php -S 0.0.0.0:8000 and serve the content of /myproject on port 8000
• CMD will take an array and run a command. Every parameter must be in a separate array element, so: CMD ["command", "param1", "param2", ...]

docker run --name myphp-container -p 8080:8000 myphpapp

• Will run spin up the image myphpapp which we generated

• -p 8080:8000 Will forward port 8000 in the container to port 8080 on the host

• http://localhost:8080  should bring up the hello world

End this with ctrl+c

• to stop the container
• Mind on Windows: The container is still running in the background.

docker rm -f myphp-container

• To remove the container: cleanup

docker rmi myphpapp

• Remove the myphpp image again