Simple Echo IP by nginx and certbot

Publish a simple http service to echo the client-side ip

i.e. Visit a url and return client side ip

i.e. return X.X.X.X by sending ip.example.com request

It is useful when your web service need to grep client side IP or simply want to check local machine ip because of connecting to other network and see is it worked.

Usage

cp .env.smaple .env

Fill in the essential info in .env

CERTBOT_EMAIL=YOUR EMAIL ADDRESS

DOMAIN_NAME=YOUR DOMAIN NAME (e.g. ip.example.com)

docker-compose up

docker-nginx-certbot docker image will help to requests SSL certificates from Let's Encrypt. So your simple request will protect by SSL cert from port 443.

Credit

docker-nginx-certbot docker image :

https://github.com/JonasAlfredsson/docker-nginx-certbot

Any more flexible config can ref to above docker image / git repo.

Nginx Template

For template of nginx conf, it can replace env variable to the template. The feature is by the following:

https://github.com/JonasAlfredsson/docker-nginx-certbot/blob/master/docs/good_to_know.md#help-migrating-from-staticfloats-image

https://github.com/docker-library/docs/tree/master/nginx#using-environment-variables-in-nginx-configuration-new-in-119