diff --git a/README.md b/README.md
index d089d56..1e3eecb 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,40 @@ docker push yourlogin/node-demo-app
 docker build -t builddep -f Dockerfile.builddep .
 docker run -it -v $PWD:/root builddep
 cd /root
-apt-get install -y npm
-git-buildpackage  # creates *.deb file in node-demo-app_<version>_<arch>.deb
-exit
-cp <container_id>:/node-demo-app_<version>_<arch>.deb .
+apt-get install -y npm    # install npm to be able to run npm install
+git-buildpackage          # creates *.deb file in node-demo-app_<version>_<arch>.deb
+cp ../*.deb .             # *.deb file is created 1 level lower, copy it to current level so it is saved in the volume
+exit                      # exit container
+```
+
+## Create S3 debian repository
+```
+apt-get install aptly
+aptly repo create -distribution=xenial -component=main release
+aptly repo add release /mnt/deb # directory or *.deb file
+```
+
+edit S3 settings in ~/aptly.conf (only add public-read if you wantto make the S3 bucket public)
+```
+  ...
+  "S3PublishEndpoints": {
+    "spinnaker-debian-repo": {
+      "region": "eu-west-1",
+      "bucket": "spinnaker-debian-repo",
+      "acl": "public-read",
+      "awsAccessKeyID": "access key id",
+      "awsSecretAccessKey": "aws secret access key"
+    }
+  },
+  ...
+```
+
+Publish to S3
+```
+aptly publish repo release s3:spinnaker-debian-repo:
+```
+
+Update repo afterwards
+```
+aptly publish update xenial s3:spinnaker-debian-repo:
 ```