Updates for supporting certbot (#2)

3 files changed, 103 insertions, 2 deletions

diff --git a/docker-compose.yml b/docker-compose.yml
index 3e5e059..901d41b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -14,7 +14,8 @@ services:
       - ./nginx/sites.template:/etc/nginx/sites-available/sites.template
       - ./nginx/default/html:/var/www/html
       - ./nginx/log/nginx:/var/log/nginx
-      - ./nginx/letsencrypt/:/etc/letsencrypt
+      - ./data/certbot/conf:/etc/letsencrypt
+      - ./data/certbot/www:/var/www/certbot
     ports:
       - "80:80"
       - "443:443"
@@ -22,7 +23,14 @@ services:
       - NGINX_HOSTNAME=${HOST_NAME:-sl}.${DOMAIN_SUB:-lab}.${DOMAIN_ROOT:-bigbluebutton.org}
     depends_on:
       - scalelite.api
-    command: /bin/bash -c "envsubst '$$NGINX_HOSTNAME' < /etc/nginx/sites-available/sites.template > /etc/nginx/sites-enabled/sites.conf && exec nginx -g 'daemon off;'"
+    command: /bin/bash -c "envsubst '$$NGINX_HOSTNAME' < /etc/nginx/sites-available/sites.template > /etc/nginx/sites-enabled/sites.conf && while :; do sleep 6h & wait $${!}; nginx -s reload; done & nginx -g 'daemon off;'"
+
+  certbot:
+    image: certbot/certbot
+    volumes:
+      - ./data/certbot/conf:/etc/letsencrypt
+      - ./data/certbot/www:/var/www/certbot
+    entrypoint: "/bin/sh -c 'trap exit TERM; while :; do certbot renew; sleep 12h & wait $${!}; done;'"
 
   redis:
     image: redis
diff --git a/init-letsencrypt.sh b/init-letsencrypt.sh
new file mode 100755
index 0000000..13eaa75
--- /dev/null
+++ b/init-letsencrypt.sh
@@ -0,0 +1,80 @@
+#!/bin/bash
+
+if ! [ -x "$(command -v docker-compose)" ]; then
+  echo 'Error: docker-compose is not installed.' >&2
+  exit 1
+fi
+
+domains=(example.org www.example.org)
+rsa_key_size=4096
+data_path="./data/certbot"
+email="" # Adding a valid address is strongly recommended
+staging=0 # Set to 1 if you're testing your setup to avoid hitting request limits
+
+if [ -d "$data_path" ]; then
+  read -p "Existing data found for $domains. Continue and replace existing certificate? (y/N) " decision
+  if [ "$decision" != "Y" ] && [ "$decision" != "y" ]; then
+    exit
+  fi
+fi
+
+
+if [ ! -e "$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"
+mkdir -p "$data_path/conf/live/$domains"
+docker-compose run --rm --entrypoint "\
+  openssl req -x509 -nodes -newkey rsa:1024 -days 1\
+    -keyout '$path/privkey.pem' \
+    -out '$path/fullchain.pem' \
+    -subj '/CN=localhost'" certbot
+echo
+
+
+echo "### Starting nginx ..."
+docker-compose up --force-recreate -d nginx
+echo
+
+echo "### Deleting dummy certificate for $domains ..."
+docker-compose run --rm --entrypoint "\
+  rm -Rf /etc/letsencrypt/live/$domains && \
+  rm -Rf /etc/letsencrypt/archive/$domains && \
+  rm -Rf /etc/letsencrypt/renewal/$domains.conf" certbot
+echo
+
+
+echo "### Requesting Let's Encrypt certificate for $domains ..."
+#Join $domains to -d args
+domain_args=""
+for domain in "${domains[@]}"; do
+  domain_args="$domain_args -d $domain"
+done
+
+# Select appropriate email arg
+case "$email" in
+  "") email_arg="--register-unsafely-without-email" ;;
+  *) email_arg="--email $email" ;;
+esac
+
+# 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 \
+    $domain_args \
+    --rsa-key-size $rsa_key_size \
+    --agree-tos \
+    --force-renewal" certbot
+echo
+
+echo "### Reloading nginx ..."
+docker-compose exec nginx nginx -s reload
diff --git a/nginx/sites.template b/nginx/sites.template
index ba3c04e..f3c237d 100644
--- a/nginx/sites.template
+++ b/nginx/sites.template
@@ -9,6 +9,19 @@ server {
 
     listen 80;
     listen [::]:80;
+
+    location /.well-known/acme-challenge/ {
+        root /var/www/certbot;
+    }
+
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}
+
+server {
+    server_name $NGINX_HOSTNAME;
+
     listen 443 ssl;
     listen [::]:443;