diff --git a/README.md b/README.md
index 25e76c4..d444b95 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,19 @@
 
 ## build
 
+### state
+
+
+### build manually
+
 ```
 docker build --pull=true -t pgollor/jenkins-slave ./docker/main/
 docker build --pull=true -t pgollor/jenkins-slave-arduino ./docker/arduino/
 ```
+
+## usage
+At fist start pleas execute `install.sh` to generate the config file and data directory.
+After that you should modify the `slave.conf` file and can start the container with:
+```
+docker-compse up -d --remove-orphans
+```
diff --git a/docker-compose.yml b/docker-compose.yml
index 97592aa..982efc6 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,7 +2,7 @@
 
 services:
     jenkins-slave1:
-      image: pgollor/jenkins-slave
+      image: pgollor/jenkins-slave-ssh
       mem_limit: 4g
       restart: always
       environment:
diff --git a/docker/main/Dockerfile b/docker/main/Dockerfile
deleted file mode 100644
index 39199f5..0000000
--- a/docker/main/Dockerfile
+++ /dev/null
@@ -1,14 +0,0 @@
-FROM jenkinsci/ssh-slave
-LABEL MAINTAINER="Pascal Gollor <kalle@pgollor.de>"
-
-## install dependencies
-RUN apt-get -y update \
-	&& apt-get -y upgrade \
-	&& rm -rf /var/lib/apt/lists/*
-
-# install new ssh key
-RUN rm /etc/ssh/ssh_host_rsa_key* /etc/ssh/ssh_host_dsa_key*
-RUN ssh-keygen -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa
-RUN ssh-keygen -f /etc/ssh/ssh_host_dsa_key -N '' -t dsa
-
-ENTRYPOINT ["setup-sshd"]
diff --git a/docker/ssh/Dockerfile b/docker/ssh/Dockerfile
new file mode 100644
index 0000000..39199f5
--- /dev/null
+++ b/docker/ssh/Dockerfile
@@ -0,0 +1,14 @@
+FROM jenkinsci/ssh-slave
+LABEL MAINTAINER="Pascal Gollor <kalle@pgollor.de>"
+
+## install dependencies
+RUN apt-get -y update \
+	&& apt-get -y upgrade \
+	&& rm -rf /var/lib/apt/lists/*
+
+# install new ssh key
+RUN rm /etc/ssh/ssh_host_rsa_key* /etc/ssh/ssh_host_dsa_key*
+RUN ssh-keygen -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa
+RUN ssh-keygen -f /etc/ssh/ssh_host_dsa_key -N '' -t dsa
+
+ENTRYPOINT ["setup-sshd"]
diff --git a/install.sh b/install.sh
index ab3fb08..eb58321 100755
--- a/install.sh
+++ b/install.sh
@@ -1,4 +1,36 @@
 #!/bin/bash
 
-mkdir -p data/slave1
-mkdir -p data/slave2
+configFile="slave.conf"
+dataDir="data"
+
+if [[ -f $configFile ]]; then
+	read -r -p "A config file exists and will be overwritten, are you sure you want to contine? [y/N] " response
+	case $response in
+		[yY][eE][sS]|[yY])
+			mv "${configFile}" "${configFile}_backup"
+		;;
+	*)
+		exit 1
+		;;
+	esac
+fi
+
+
+mkdir -p $dataDir/slave1
+mkdir -p $dataDir/slave2
+
+cat << EOF > $configFile
+# address to bind ssh ports to
+JENKINS_SLAVE_SSH_BIND=127.0.0.1
+
+# slave 1 ssh port
+JENKINS_SLAVE1_SSH_PORT=10001
+
+# slave 2 ssh port
+JENKINS_SLAVE2_SSH_PORT=10002
+
+# ssh public key to connect from jenkins to this build slaves
+JENKINS_SLAVE_SSH_PUBKEY=
+
+EOF
+