diff --git a/inst/develo/dockerImage/Dockerfile b/inst/develo/dockerImage/Dockerfile
index 36a99021e2e3cb16924dd91dc09cbaf19e2571dd..302640bf6fd3f7c36ac49eeb87eb68e54933631a 100644
--- a/inst/develo/dockerImage/Dockerfile
+++ b/inst/develo/dockerImage/Dockerfile
@@ -1,3 +1,9 @@
+# to start the latest:
+# docker pull pf2dock/schnapps
+# docker run --user shiny --rm -p 3838:3838 -v /Users/bernd/Rstudio/:/data pf2dock/schnapps
+# in e.g. chrom:
+# http://localhost:3838/
+
 # https://hub.docker.com/r/rocker/shiny
 # https://github.com/rocker-org/shiny
 
diff --git a/inst/develo/dockerImage/DockerfileUpdate.txt b/inst/develo/dockerImage/DockerfileUpdate.txt
index 42d280669b80be61e540833c896278a64ae62e8a..86d8222ba935fb0123a73279acff48f2ebf7e831 100644
--- a/inst/develo/dockerImage/DockerfileUpdate.txt
+++ b/inst/develo/dockerImage/DockerfileUpdate.txt
@@ -1,7 +1,7 @@
 # docker build - 
 
 # load R image
-FROM pf2dock/schnapps:1.6.133
+FROM pf2dock/schnapps:1.6.134
 
 # set working directory
 WORKDIR /root