wdbasson / visit-counter

Demonstrating a site visit counter inside a PHP docker

Synopsis

This repo serves as an introduction to containerization for interns at our lab.

Description

The vanilla example demonstrates a simple site visit counter in a PHP container.

Two core concepts are conveyed in the vanilla example: 1) how to build your own docker from Dockerfile, and 2) how to mount a volume inside of a docker.

The progression from the vanilla example is documented in docs/README.md where interns should incrementally build on the vanilla example in order to finally replace the functionality of the countlog.txt text file with a SQL DB running in a different container.

How to build

docker build -t zenlab/visit-counter .

How to run

run with docker image built from Dockerfile

docker run --rm \
  -p 80:80 \
  --name visit-counter \
  zenlab/visit-counter

run with official php docker image

docker run --rm \
  -p 80:80 \
  --name php \
  -v "$PWD/scripts":/var/www/html \
  php:7.0-apache

How to overwrite the web root with a volume at runtime

docker run --rm \
  -p 80:80 \
  --name visit-counter \
  -v "$PWD/scripts":/var/www/html \
  zenlab/visit-counter

How to access

http://localhost/counter.php

or

http://localhost/php.info

Acknowledgments

Code adapted from http://justintadlock.com/web-design/counter

Docker image extended from https://hub.docker.com/_/php/