Combine proxy settings with docker-compose into one file

日本語:https://qiita.com/SolKul/items/2561c62734958c231b24

I made a repository that puts all proxy settings related to docker-compose into one file ( a file called .env).

Advantages

The advantage of this repository.

• Proxy settings do not burn to docker image
• You wanted to distribute docker-compose.yml for someone else, but you didn't want to distribute it as is because the proxy settings in docker-compose.yml or Dockerfile contains authentication information. In this case, using this repository, the proxy settings are written in neither docker-compose.yml nor Dockerfile but only the .env file. What you have to do is only changing the .env file. It makes easy to distribute.

Verification

Run docker-compose up, start up the container, and run bash in the container with the following command, and you will see the proper proxy settings.

$ docker-compose exec ${service name in docker-compse.yml(`test` in this repository)} bash  
root $ env | grep PROXY
### you will see the proper proxy settings. ###