init-letsencrypt.sh

#!/bin/bash

set -e
set -u
set -o pipefail
set -x

domains=("$@")
rsa_key_size=4096
data_path="./data/certbot"
email="mark@marktai.com" # Adding a valid address is strongly recommended
staging=0 # Set to 1 if you're testing your setup to avoid hitting request limits

for domain in "${domains[@]}"; do
  if [ -d "$data_path"/"domain" ]; then
    read -p "Existing data found for $domain. Continue and replace existing certificate? (y/N) " decision
    if [ "$decision" != "Y" ] && [ "$decision" != "y" ]; then
      exit
    fi
  fi
done


if [ ! -e "$data_path/conf/options-ssl-nginx.conf" ] || [ ! -e "$data_path/conf/ssl-dhparams.pem" ]; then
  echo "### Downloading recommended TLS parameters ..."
  mkdir -p "$data_path/conf"
  curl -s https://raw.githubusercontent.com/certbot/certbot/master/certbot-nginx/certbot_nginx/_internal/tls_configs/options-ssl-nginx.conf > "$data_path/conf/options-ssl-nginx.conf"
  curl -s https://raw.githubusercontent.com/certbot/certbot/master/certbot/certbot/ssl-dhparams.pem > "$data_path/conf/ssl-dhparams.pem"
  echo
fi

echo "### Creating dummy certificate for $domains ..."
path="/etc/letsencrypt/live/$domains"
for domain in "${domains[@]}"; do
  path="/etc/letsencrypt/live/$domain"
  mkdir -p "$data_path/conf/live/$domain"
  docker-compose run --rm --entrypoint "\
    openssl req -x509 -nodes -newkey rsa:$rsa_key_size -days 1\
      -keyout '$path/privkey.pem' \
      -out '$path/fullchain.pem' \
      -subj '/CN=localhost'" certbot
  echo
done


echo "### Starting nginx ..."
docker-compose up --build --force-recreate -d nginx
sleep 5
echo


echo "### Requesting Let's Encrypt certificate for $domains ..."
for domain in "${domains[@]}"; do
  echo "### Deleting dummy certificate for $domain ..."
  docker-compose run --rm --entrypoint "\
    rm -Rf /etc/letsencrypt/live/$domain && \
    rm -Rf /etc/letsencrypt/archive/$domain && \
    rm -Rf /etc/letsencrypt/renewal/$domain.conf" certbot
  echo
  # Select appropriate email arg
  case "$email" in
    "") email_arg="--register-unsafely-without-email" ;;
    *) email_arg="--email $email" ;;
  esac
  staging_arg=""

  # Enable staging mode if needed
  if [ $staging != "0" ]; then staging_arg="--staging"; fi

  docker-compose run --rm --entrypoint "\
    certbot certonly --webroot -w /var/www/certbot \
      $staging_arg \
      $email_arg \
      -d $domain \
      --rsa-key-size $rsa_key_size \
      --agree-tos \
      --force-renewal" certbot
  echo
done


echo "### Reloading nginx ..."
docker-compose exec nginx nginx -s reload