diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index beeab9650868f22120bddf20730e4ff67383df94..8b529c36e264adc75c959a03008d33e6eb05065d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,10 +1,7 @@
 image: registry-gitlab.pasteur.fr/dsi-tools/docker-images/docker:latest
 
 services:
-  - registry-gitlab.pasteur.fr/dsi-tools/docker-images/docker:dind  
-
-variables:
-  DOCKER_HUB_MIRROR: "harbor.pasteur.fr/images/"
+  - registry-gitlab.pasteur.fr/dsi-tools/docker-images/docker:dind
 
 
 
@@ -96,6 +93,7 @@ trigger_r_example:
     branch: base-r
 
 
+
 trigger_python_example:
   needs: ["build"]
   trigger:
diff --git a/Dockerfile.python b/Dockerfile.python
index b1bbf2fdd12d308cb4b38ff70f40d1b1252cd7c1..7097a40ab3c366a40ca5160fd1dca27798cf75ef 100644
--- a/Dockerfile.python
+++ b/Dockerfile.python
@@ -1,4 +1,4 @@
-FROM ${DOCKER_HUB_MIRROR}python:${PYTHON_VERSION}
+FROM python:${PYTHON_VERSION}
 
 # define geographic location during installation
 ENV TZ=Etc/UTC
diff --git a/Dockerfile.r b/Dockerfile.r
index 2295d23868ba4f810205a62a7d0c3ad40a00fa90..261e6723ef906de05d3b0a1e576e9e1e6c94682a 100644
--- a/Dockerfile.r
+++ b/Dockerfile.r
@@ -1,4 +1,4 @@
-FROM ${DOCKER_HUB_MIRROR}ubuntu:focal
+FROM ubuntu:focal
 
 # define geographic location during R installation
 ENV TZ=Etc/UTC