change variable names

docker/scripts/0-create-cert.sh

@@ -11,20 +11,20 @@ if [ ! -f /etc/certificates/site.pem ]; then
 fi
 
 # check e-mail for letsencrypt notifications
-if [ -n "$EMAIL" ]; then
-  CERTBOT_OPTS="--email $EMAIL"
+if [ -n "$CERTBOT_EMAIL" ]; then
+  CERTBOT_OPTS="--email $CERTBOT_EMAIL"
 else
   CERTBOT_OPTS="--register-unsafely-without-email"
 fi
 
-if [ -n "$DOMAIN" ]; then
+if [ -n "$CERTBOT_DOMAIN" ]; then
 
   # Request certificate
   certbot certonly --standalone \
     --non-interactive --agree-tos --http-01-port=380 \
     "$CERTBOT_OPTS" \
-    --cert-name "$DOMAIN" \
-    -d "$DOMAIN"
+    --cert-name "$CERTBOT_DOMAIN" \
+    -d "$CERTBOT_DOMAIN"
 
   # Concatenate certificates
   . $(dirname $0)/2-concatenate-cert.sh