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PHP CLI on Docker

Objectives

  • A PHP executable on Docker, to run PHP scripts on the fly with php-cli

  • Create the container and remove it immediately after the script execution

  • To test particular PHP versions, configurations, extensions and build processes

Build the image

  • 7.4-large: includes exact same libraries as used in the Quoteguy web app, notably libraries for dynamic image generation

docker build -f Dockerfile.7-4-large \
    -t php-cli:7.4-large \
    .

Create command line alias

To create a permanent Bash alias:

  • Open ~/.bash_aliases (create if does not exist)

  • Append alias php1='docker container run --rm -v $(pwd):/app/ --user $(id -u):$(id -g) php-cli:7.4-large'

  • Save and close the file

  • Activate alias by executing source ~/.bash_aliases

Tests

php1 -f tests/inkscape.php php1 -f tests/yaml.php

Executing scripts

Just go to the directory with your code and run:

docker container run --rm -v $(pwd):/app/ --user $(id -u):$(id -g) php-cli:7.4-large test.php

or with the alias:

php test.php

  • --rm will remove the container after execution

  • -v $(pwd):/app/ will mount the current directory as volume

  • php-cli-docker:74-large is the image

  • test.php is the command which will be executed after the container is created

  • test.php is the script to execute

  • In general we want file outputs to have the same permission as the local user $USER. Hence the --user $(id -u):$(id -g) option.

  • Ensure the directory where you want to write on the host has permissions 0777.