diff --git a/Dockerfile b/Dockerfile
index e65a8db797462221fd1b622d67afad030f91332e..3513047df4e98250011aab84ada0c7bde366b7a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,14 @@
 ARG DOCKER_REGISTRY=registry.cyberbrain.pw
 ARG DOCKER_IMAGE_GIT=$DOCKER_REGISTRY/tools/docker/git/main
 ARG DOCKER_IMAGE_UBUNTU=$DOCKER_REGISTRY/tools/docker/ubuntu/main
+ARG SOPDS_GIT_TAG
 
 ############################################################
 
 FROM $DOCKER_IMAGE_GIT AS git
 RUN set -ex && \
-	( git clone --depth=1 https://gitlab.cyberbrain.pw/tools/mirror/sopds.git /tmp || echo error: failed to clone master repository. ) && \
+	( git clone https://gitlab.cyberbrain.pw/tools/mirror/sopds.git /tmp || echo error: failed to clone master repository. ) && \
+    git -C /tmp -c advice.detachedHead=false checkout ${SOPDS_GIT_TAG:-$(git -C /tmp tag | grep -e '^v' | sort -V | tail -n 1)} && \
 	ls -la /tmp
 
 ############################################################