diff --git a/debian:stretch/.gitkeep b/debian:stretch/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/debian:stretch/Dockerfile b/debian:stretch/Dockerfile
deleted file mode 100644
index 64f19b6553ea6453a93e40a2c020bfbc3c9c1203..0000000000000000000000000000000000000000
--- a/debian:stretch/Dockerfile
+++ /dev/null
@@ -1,9 +0,0 @@
-FROM debian:stretch
-
-RUN apt-get update && apt-get -y install host telnet netcat procps net-tools iptables tcpdump && apt-get clean && rm -rf /var/cache/apt/archives /var/lib/apt/lists
-
-EXPOSE 3000 4000 5000 6000
-
-ADD netfilter_gw1.sh /netfilter.sh
-
-CMD [ "/netfilter.sh" ]
diff --git a/debian:stretch/Jenkinsfile b/debian:stretch/Jenkinsfile
deleted file mode 100644
index 2fbd41c40622c418907fc544ad7b8c695e3e40a8..0000000000000000000000000000000000000000
--- a/debian:stretch/Jenkinsfile
+++ /dev/null
@@ -1,30 +0,0 @@
-node {
-  def app1
-
-  stage('Cleaning up working dir') {
-    step([$class: 'WsCleanup'])
-  }
-
-  stage('Clone repository') {
-    /* Let's make sure we have the repository cloned to our workspace */
-    checkout scm
-  }
-
-  stage('build') {
-    stage('Build image application:latest') {
-      /* This builds the actual image; synonymous to
-      * docker build on the command line */
-      app1 = docker.build( "http://localhost:8081/repository/docker-private/debian:1")
-    }
-  }
-
-  stage('Push image') {
-    /* Finally, we'll push the image with two tags:
-    * First, the incremental build number from Jenkins
-    * Second, the 'latest' tag.
-    * Pushing multiple tags is cheap, as all the layers are reused. */
-    docker.withRegistry('http://localhost:8081/repository/docker-private/', 'nexus-user-credentials') {
-      app1.push("latest")
-    }
-  }
-}
\ No newline at end of file
diff --git a/thibault/.gitkeep b/thibault/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000