Dockerizing Certbot and automatically renewing Let’s Encrypt certificates with Shell Script and Crontab

certbot-autorenewal.sh

### certbot-autorenewal.sh
    
#!/bin/bash
cd /home/{your-docker-compose-folder}
echo "--------------- RENEWING CERTS ---------------"
docker-compose up certbot-site1.com
docker-compose up certbot-site2.com
etc...
echo "--------------- RESTARTING NGINX ---------------"
service nginx restart

crontab

### sudo crontab

# make script executable via bash
cd /path/to/script
sudo chmod +x ./certbot-autorenewal.sh

# open sudo crontab from bash
sudo crontab -e

# add the following line to the bottom
0 0 10 * * /bin/bash /home/{path-to-shell-script}/certbot-autorenewal.sh >> /home/{crontab-logs-path}/crontab.log

docker-compose.yml

### docker-compose.yml
services:
  certbot-site1.com:
      container_name: certbot-site1.com
      image: certbot/certbot
      volumes:
        - ./certs/etc/letsencrypt/:/etc/letsencrypt/
        - ./sites/site1/:/var/www/site1.com
      command: certonly --webroot --cert-name site1.admin.com --email adm@site1.com --agree-tos --no-eff-email --renew-by-default -w /var/www/site1.com/{webroot} -d site1.com,www.site1.com


  certbot-site2.com:
      container_name: certbot-site2.com
      image: certbot/certbot
      volumes:
        - ./certs/etc/letsencrypt/:/etc/letsencrypt/
        - ./sites/site2.com/:/var/www/site2.com
      command: certonly --webroot --cert-name site2.admin.com --email adm@site2.com --agree-tos --no-eff-email --renew-by-default -w /var/www/site2.com -d site2.com,www.site2.com

      etc...
    
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