diff --git a/docker/templates/readme.md b/docker/templates/readme.md
index 34c2c57c1ad0518f5cc00d12148cdddc0720187f..8a37d97e8453e82820f74a495ef5640b2a7b5853 100644
--- a/docker/templates/readme.md
+++ b/docker/templates/readme.md
@@ -5,3 +5,5 @@
 * in the first line must be a line `# TARGET: [name of target file]` to define the target file
 * Placeholdrs have the syntax variable in double brackets, i.e. `{{VARNAME}}`
 * variables to be replaced are those in docker/init.sh.cfg and `{{genrator}}`
+
+see <https://os-docs.iml.unibe.ch/docker-php-starterkit/Configuration/Templates.html>