diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4504b8ca5c2c3580eefc4c02080fd186f0424635..a92968187f7a05a3e84f95c38d7fa8d42f1d959a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,7 @@
 image: docker/compose:latest
 
 before_script:
+  - git submodule update --init --recursive
   - docker version
   - docker-compose version
 
diff --git a/README.md b/README.md
index 6e19c531fcc12e914d7787ba91cd0b6d3312b831..63402e96feefefc9ad9da02fc2bfa3805ce221e1 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,22 @@ docker-compose up
 
 ### Troubleshooting
 
+##### FDA Runner
+
+Hosted at TU Wien 128.130.202.89, only accessible from TU-Network
+
+**Important**
+
+Different MTU for HPC Cluster, edit for Docker to work with bridge mode the `/etc/docker/daemon.json`:
+
+```bash
+{
+    "mtu": 1450
+}
+```
+
+##### Virtual Machine
+
 Ubuntu 20.04 LTS
 
 Use openjdk-11...openjdk-8 does not work.
diff --git a/fda-container-managing-service/Dockerfile b/fda-container-managing-service/Dockerfile
index 966c313d40c9e693014db1c97972d7bdd2e3515a..231bd8a4752d008387e374d4e7fb8256c07c5e78 100644
--- a/fda-container-managing-service/Dockerfile
+++ b/fda-container-managing-service/Dockerfile
@@ -4,13 +4,13 @@ MAINTAINER Martin Weise <martin.weise@tuwien.ac.at>
 
 COPY ./pom.xml ./
 
-RUN mvn -fn -B dependency:go-offline
+RUN mvn -fn -B dependency:go-offline > /dev/null
 
 COPY ./api ./api
 COPY ./rest-service ./rest-service
 COPY ./services ./services
 
-RUN mvn -q clean package
+RUN mvn -q clean package > /dev/null
 
 ###### SECOND STAGE ######
 FROM openjdk:11-jre-slim as runtime