Very small and easy useable docker container with Nginx web-server and "Let's Encrypt" client - ACME.sh.
After the initial issue of the certificate, its updating is automated by cron in container!

• 1.12-alpine or latest (1.12-alpine/Dockerfile)
• 1.12-debian (1.12-debian/Dockerfile)
• 1.13-alpine (1.13-alpine/Dockerfile)
• 1.13-debian (1.13-debian/Dockerfile)

Old releases:

• 1.10-alpine (1.10-alpine/Dockerfile)
• 1.10-debian (1.10-debian/Dockerfile)
• 1.11-alpine (1.11-alpine/Dockerfile)
• 1.11-debian (1.11-debian/Dockerfile)

1. Create directories for docker container volumes:

   mkdir -p /var/docker/nginx/ssl /var/docker/nginx/conf.d

2. Generate a DH Parameter (Key) File (recommended 2048 bits):

   openssl dhparam -out /var/docker/nginx/ssl/dhparam.pem 2048

3. Create configs for Nginx in /var/docker/nginx: See the simple examples in GitHub Repository and Mozilla SSL Configuration Generator.

4. Create user-defined network:

   sudo docker network create nginx

5. Create docker container:

   sudo docker run \
   --name nginx \
   --hostname nginx \
   --network nginx \
   -p 80:80 \
   -p 443:443 \
   -e ACCOUNT_CONF_PATH=/etc/nginx/ssl/acme.sh.conf \
   -v /etc/timezone:/etc/timezone:ro -v /etc/localtime:/etc/localtime:ro \
   -v /var/docker/nginx/nginx.conf:/etc/nginx/nginx.conf:ro \
   -v /var/docker/nginx/conf.d:/etc/nginx/conf.d:ro \
   -v /var/docker/nginx/ssl:/etc/nginx/ssl:rw \
   -v /var/docker/nginx/logs:/var/log/nginx:rw \
   -v /var/docker/nginx/www:/var/www:rw \
   -d --restart always \
   magnaz/nginx-acme:1.12-alpine

6. Initial issue "Let's Encrypt" certificate:

   sudo docker exec nginx \
   acme.sh --issue \
   -w /var/www/example.com \
   -d example.com -d www.example.com