Tikiwiki: Fix version.
diff --git a/tikiwiki/docker-tikiwiki/Dockerfile b/tikiwiki/docker-tikiwiki/Dockerfile
index 122df7d..958826f 100644
--- a/tikiwiki/docker-tikiwiki/Dockerfile
+++ b/tikiwiki/docker-tikiwiki/Dockerfile
@@ -1,7 +1,9 @@
 FROM tikiwiki/php:7.2-apache
 LABEL mantainer "TikiWiki <tikiwiki-devel@lists.sourceforge.net>"
 
-ARG TIKI_SOURCE="https://gitlab.com/tikiwiki/tiki/-/archive/master/tiki-master.tar.gz"
+ARG COMMIT=a58da1b2478eb52627c06414db307b338352aa85
+ARG TIKI_SOURCE="https://gitlab.com/tikiwiki/tiki/-/archive/$COMMIT/tiki-$COMMIT.tar.gz"
+
 WORKDIR "/var/www/html"
 
 # If you have https_proxy with SslBump, place it's cetificate