diff --git a/README.md b/README.md
index 225ae66..995bce6 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ My personal solution is a local, docker-based CI/CD Build Environment ready in a
 * docker-compose version >= 1.15.0
 
 ## Installation
+### without sonar
 Bring up your own build environment ... just do a
 ```
    git clone https://github.com/Springjunky/docker-local-build-environment.git
@@ -25,6 +26,20 @@ Bring up your own build environment ... just do a
    docker-compose up --build -d
    docker-compose logs
 ```
+
+### with sonar
+Warning: you need a lot of memory to use the full toolset (more than 10GB)
+```
+   git clone https://github.com/Springjunky/docker-local-build-environment.git
+   cd docker-local-build-environment
+   sudo ./setupEnvironment.sh
+   docker-compose  -f docker-compose.yml -f docker-compose-sonar.yml up --build
+   docker-compose logs
+```
+
+
+
+
 ### The first startup takes a long time (especially gitlab), so be patient
 
 open your favorite browser (_not_ at localhost, use the $(hostname)/jenkins )
@@ -121,7 +136,7 @@ It takes a long time until gitlab is ready to accept a runner registration, if i
 Gitlab is very very fast with new releases and sometimes the api has breaking changes. If something does not work take a look at the Jenkins Bugtracker.
 
 ### Sonar
-In future releases Sonar will be added...(You need to install some rules (Administration - System - Update Center - Available - Search: Java)
+You need to install some rules (Administration - System - Update Center - Available - Search: Java)
 
 ### Nexus
 Some ToDo for me described here
@@ -162,7 +177,7 @@ every ping must work, if not, check extra_hosts in compose-file
 * ~~install ansible~~
 * ~~apply a gitlab runner~~
 * ~~apply git-lfs~~
-* apply sonar
+* ~~apply sonar~~
 * apply a better registry
 
 
diff --git a/docker-compose-sonar-part.yml.template b/docker-compose-sonar-part.yml.template
deleted file mode 100644
index e35990b..0000000
--- a/docker-compose-sonar-part.yml.template
+++ /dev/null
@@ -1,26 +0,0 @@
-  sonar-db:
-    image: postgres
-    environment:
-      - POSTGRES_USER=sonar
-      - POSTGRES_PASSWORD=sonar
-    volumes:
-      - BASE_DATA_DIR/sonar-db/postgresql:/var/lib/postgresql
-      # This needs explicit mapping due to
-      # https://github.com/docker-library/postgres/blob/4e48e3228a30763913ece952c611e5e9b95c8759/Dockerfile.template#L52
-      - BASE_DATA_DIR/sonar-db/postgresql_data:/var/lib/postgresql/data
-    networks:
-       - devstacknetwork
-  sonar:
-    image: sonarqube
-    extra_hosts:
-      - HOSTNAME:HOSTIP
-
-    networks:
-       - devstacknetwork
-    environment:
-      - SONARQUBE_JDBC_URL=jdbc:postgresql://sonar-db:5432/sonar
-    volumes:
-      - BASE_DATA_DIR/sonar/sonarqube_conf:/opt/sonarqube/conf
-      - BASE_DATA_DIR/sonar/sonarqube_data:/opt/sonarqube/data
-      - BASE_DATA_DIR/sonar/sonarqube_extensions:/opt/sonarqube/extensions
-      - BASE_DATA_DIR/sonar/sonarqube_bundled-plugins:/opt/sonarqube/lib/bundled-plugins
diff --git a/docker-compose-sonar.yml b/docker-compose-sonar.yml
new file mode 100644
index 0000000..0179a49
--- /dev/null
+++ b/docker-compose-sonar.yml
@@ -0,0 +1,35 @@
+
+# docker-sonar configuration,
+# add this to your docker-compose up if you want to have sonarqube
+# docker-compose -f docker-xcompose.yml -f docker-compose-sonar.yml up
+version: "3"
+
+services:
+  postgres:
+    image: postgres
+    extra_hosts:
+      - ${DC_HOSTNAME}:${DC_HOSTIP}
+    networks:
+      - devstacknetwork
+    environment:
+      - POSTGRES_USER=sonar
+      - POSTGRES_PASSWORD=sonar
+    volumes:
+      - ${DC_BASE_DATA_DIR}/postgres-db/postgresql:/var/lib/postgresql
+      # This needs explicit mapping due to
+      # https://github.com/docker-library/postgres/blob/4e48e3228a30763913ece952c611e5e9b95c8759/Dockerfile.template#L52
+      - ${DC_BASE_DATA_DIR}/postgres-db/postgresql_data:/var/lib/postgresql/data
+
+  sonar:
+    image: sonarqube
+    extra_hosts:
+      - ${DC_HOSTNAME}:${DC_HOSTIP}
+    networks:
+       - devstacknetwork
+    environment:
+      - SONARQUBE_JDBC_URL=jdbc:postgresql://postgres:5432/sonar
+    volumes:
+      - ${DC_BASE_DATA_DIR}/sonar/sonarqube_conf:/opt/sonarqube/conf
+      - ${DC_BASE_DATA_DIR}/sonar/sonarqube_data:/opt/sonarqube/data
+      - ${DC_BASE_DATA_DIR}/sonar/sonarqube_extensions:/opt/sonarqube/extensions
+      - ${DC_BASE_DATA_DIR}/sonar/sonarqube_bundled-plugins:/opt/sonarqube/lib/bundled-plugins
diff --git a/docker-compose.yml b/docker-compose.yml
index 43a764a..8a44470 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -20,11 +20,15 @@ services:
        # SSH Bypassing into gitlab, if you want to change this edit nginx.conf also
        - "2222:2222"   #ssh port of gitlab (ssh://git@myHOST:2222/scott/foo.git)
        - "5555:5555"   #Gitlab Docker Registry do NOT use 5000, this is an internal PORT of the gitlab-ce Image
+     depends_on: # start  proxy after all the others
+       - gitlab
+       - jenkins
+       - nexus
      networks:
        - devstacknetwork
 
 # ------------------------------------------------------------------------------
-  jenkins-fat:
+  jenkins:
     build: jenkins-fat
     extra_hosts:
       - ${DC_HOSTNAME}:${DC_HOSTIP}
diff --git a/nginx-reverse/reverse-proxy.conf b/nginx-reverse/reverse-proxy.conf
index 9a7dc63..8bc3e6c 100644
--- a/nginx-reverse/reverse-proxy.conf
+++ b/nginx-reverse/reverse-proxy.conf
@@ -1,5 +1,6 @@
 
-# Setting all teh prefixes is a crazy ..
+# Setting all the prefixes is a crazy ..
+
 server {
     listen       80;
     server_name   "" ;
@@ -13,7 +14,7 @@ server {
 
     # Same like ENV JENKINS_OPTS=.....--prefix=/jenkins in jenkins-fat/Jenkins-Dockerfile
     location ^~/jenkins   {
-       proxy_pass        http://jenkins-fat:8080;
+       proxy_pass        http://jenkins:8080;
        include /etc/nginx/conf.d/proxy-settings.conf;
     }
 
@@ -22,11 +23,16 @@ server {
       proxy_pass         http://nexus:8081;
       include /etc/nginx/conf.d/proxy-settings.conf;
     }
-#Future Use        
-#    # Same like sonar.web.context=/sonar in preconfig/sonar/sonar.properties
-#    location ^~/sonar {
-#       proxy_pass         http://sonar:9000;
-#       include /etc/nginx/conf.d/proxy-settings.conf;
-#      }
+#Future Use
+    # Same like sonar.web.context=/sonar in preconfig/sonar/sonar.properties
+    location ^~/sonar {
+       # prevent nginx to throw errors if sonar
+       # is not available
+       # 127.0.0.11 is the Docker DNS 
+       resolver 127.0.0.11 valid=05s;
+       set $sonarvm sonar;
+       proxy_pass         http://$sonarvm:9000;
+       include /etc/nginx/conf.d/proxy-settings.conf;
+      }
 
  }
diff --git a/preconfig/sonar/sonar.properties b/preconfig/sonar/sonar.properties
index 5b0101b..4110e12 100644
--- a/preconfig/sonar/sonar.properties
+++ b/preconfig/sonar/sonar.properties
@@ -1,2 +1,2 @@
-# Only one Property is need
+# Only one Property is need (because sonar ist behind nginx)
 sonar.web.context=/sonar