letsencrypt-certbot-docker

More information: https://github.com/certbot/certbot

Build image

docker build --rm -t heckenmann/letsencrypt github.com/heckenmann/letsencrypt-certbot-docker

Run container

(You have to set your domain)

docker run -it --name letsencrypt -e DOMAIN=<<YOUR_DOMAIN>> heckenmann/letsencrypt

Get files

docker cp letsencrypt:/etc/letsencrypt/archive <<your-favorite-directory>>