Successfully tagged php-test-image:latest

Step 6/6 : RUN docker-php-ext-enable xdebug Step 4/6 : RUN docker-php-ext-install bcmath pcntl gd Step 3/6 : RUN curl -sS | php -install-dir=/usr/local/bin -filename=composer Step 2/6 : RUN apt-get update & apt-get install -y apt-utils unzip gnupg2 libpng-dev zlib1g-dev You will see the build progress and it will take a while to complete: Step 1/6 : FROM php:7.4.16-fpm Next, we must navigate into the folder where the Dockerfile is located and build our image, named php-test (alternatively you can provide the location/folder replacing the dot at the end): docker build -t php-test-image. The image will also contain some apt packages, Composer (downloaded and installed) and PECL xdebug extension (installed and enabled). This Dockerfile will take as base an existing image, which is named PHP and tagged as 7.4.16-fpm (you can find more available tags on the official PHP Docker Hub page). # Install PECL extensions and enable them RUN docker-php-ext-install bcmath pcntl gd # Install & enable bcmath, pcntl, gd PHP extensions RUN curl -sS | php -install-dir=/usr/local/bin -filename=composer RUN apt-get update & apt-get install -y apt-utils unzip gnupg2 libpng-dev zlib1g-dev Create an empty file (without extension) with this content: # Use base image: PHP-FPM, version 7.4.16 It's simply a text-based script of instructions that is used to create a container image. In order to build an image, we need to use a Dockerfile.

Installed Docker Engine: installing Docker Engine and Docker ComposeĪn account at Docker Hub, signup here if you don't have one. Often, an image is based on another image, with some additional customization.

And an image is a read-only template with instructions for creating a Docker container. You can easily share containers while you work, and be sure that everyone you share with gets the same container that works in the same way.Ī container is a runnable instance of an image. Containers are lightweight and contain everything needed to run the application, so you do not need to rely on what is currently installed on the host. The isolation and security allow you to run many containers simultaneously on a given host. Docker provides the ability to package and run an application in a loosely isolated environment called a container.

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