How I reduced the docker image size by up to 70%?

One of the internal php projects that I manage, was using Ubuntu base for php/apache (Dockerfile available on Github) This weekend I have decided to convert this stack to Alpine+Nginx+PHP

A quick google search shows that not many people are using this stack for their project. After a bit of research and testing, I published this stack and was able to successfully use for our project.

After converting the stack to Alpine based, I was able to bring down the size of the project container image upto 70%

The image as it is, is very small and has only 70MB uncompressed / 21MB compressed size



This docker image was built with the following components

  • Alpine 3.12
  • PHP 7.3
  • Nginx 1.18
  • Runit as process supervisor

How to use

FROM getvivekv/alpine-docker-nginx-php7 
# Copy your project content 
COPY html /var/www/html 
RUN composer install --optimize-autoloader --no-interaction --no-progress

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