diff --git a/Dockerfile b/Dockerfile
index d04f0411e2d9d62d1714ec26e505c6e81e52afe8..de819fc6c7516bdf7f4b6b856e709b736ff90952 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,9 @@
 ARG DOCKER_REGISTRY=registry.cyberbrain.pw
-FROM $DOCKER_REGISTRY/tools/docker/alpine/main AS runtime
+
+ARG ALPINE_IMAGE=tools/docker/alpine/main
+ARG ALPINE_TAG=latest
+
+FROM $DOCKER_REGISTRY/$ALPINE_IMAGE:$ALPINE_TAG AS runtime
 
 RUN apk add --no-cache git git-lfs openssh-client