Docker Secrets: Add DB URL Support

As the connection string may include a password it should be supported by Docker Secrets.

Signed-off-by: Jonas Thelemann <e-mail@jonas-thelemann.de>

lib/config/dockerSecret.js

@@ -13,6 +13,7 @@ function getSecret (secret) {
 
 if (fs.existsSync(basePath)) {
   module.exports = {
+    dbURL: getSecret('dbURL'),
     sessionsecret: getSecret('sessionsecret'),
     sslkeypath: getSecret('sslkeypath'),
     sslcertpath: getSecret('sslcertpath'),