Dockerfile of PHP7-Alpine

Lightweight PHP7 Alpine docker image. (Only PHP core, no modules)

docker pull keinos/php7-alpine:latest

• PHP: This image uses the latest PHP Repositories for Alpine by CODECASTS⁠
  • https://github.com/codecasts/php-alpine⁠ @ GitHub
• Repositories:
  • Image: https://hub.docker.com/r/keinos/php7-alpine @ Docker Hub
  • Source: https://github.com/KEINOS/Dockerfile_of_PHP7-Alpine⁠ @ GitHub
• Issues: https://github.com/KEINOS/Dockerfile_of_PHP7-Alpine/issues⁠ @ GitHub
• Note:

  • Update when: This image will be updated whenever the base image below is updated.

    • Base image: keinos:alpine@ DockerHub@ GitHub⁠

  • Lighweight but useless: To keep the base image as light as possible, this image only containes the latest stable PHP core and no modules are installed. Therefore, you need to apk add any PHP modules before use.

    apk add php-[module name]@php
    

    Copy
    • When apk add the php-[module name], the @php is required to avoid getting default PHP packages from alpine instead. (Ex: In order to use json_encode or json_decode function in your PHP code, you need to install JSON module by apk add php-json@php and not apk add php-json)

Usage

$ docker pull keinos/php7-alpine
...
$ # Sample of running `php --version` command
$ docker run --rm -it keinos/php7-alpine php --version
PHP 7.2.18 (cli) (built: May  4 2019 16:25:12) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies

The below YAML is an example of Dockerfile. It prepares a PHP7 image with mbstringjsonctypeopenssl modules installed and copies the src/ directory in local to /app directory on the image.

FROM keinos/php7-alpine

RUN apk update \
    && apk add --update \
      php-mbstring@php \
      php-json@php \
      php-ctype@php \
      php-openssl@php \
    && rm -rf /var/cache/apk/*

COPY src/ /app/
WORKDIR /app

$ # Access container interactively via tty and setup
$ docker run -it -name my_sample_image keinos/php7-alpine /bin/sh
/ #
/ # apk update
...
/ # # Add mb-string module for latest PHP
/ # apk add php-mbstring@php
...
/ # # Add json module for latest PHP
/ # apk add php-json@php
...
...
/ # # Delete cache of apk
/ # rm -rf /var/cache/apk/*
...
/ # exit
$