Better docker for the frontend (#240)

* Exclude vscode local settings

* Switch the image to nginx with ENV support

* Add some doc

* Fix travis config

* Ignore coverage data

* Remove version labels

* Fix the Dockerfile according to the recent refactoring

* Cleanup

* Change maintainer

According to @woss request

* Fix travis config

README.md

@@ -52,15 +52,22 @@ Follow up installation instructions from the [Polkadot repo](https://github.com/
 ### Run via Docker
 
 To run via docker make sure that you have Docker Desktop
-
-- If you dont you can download for you OS here [Docker Desktop](https://www.docker.com/products/docker-desktop)
-
-```sh
+  - If you don't you can download for you OS here [Docker Desktop](https://www.docker.com/products/docker-desktop)
+```
 docker-compose up --build -d
 ```
-
-- -d stands for detach, if you would like to see logs i recommend using [Kitmatic](https://kitematic.com/) or don't use the -d
-- --build will build the images and rebuild, but this is not required every time
-- If you want to makes UI changes, there is no need to rebuild the image as the files are being copied in via volumes.
+ - `-d` stands for detach, if you would like to see logs I recommend using [Kitmatic](https://kitematic.com/) or don't use the -d
+ - `--build` will build the images and rebuild, but this is not required every time
+ - If you want to makes UI changes, there is no need to rebuild the image as the files are being copied in via volumes.
 
 Now navigate to localhost:3000 in your browser to view the app.
+
+## Docker
+
+### Build & Publish the Frontend docker image
+
+The building process is standard. You just need to notice that the Dockerfile is in ./packages/frontend/ and tell docker about it. The context must remain the repository's root though.
+
+```
+DOCKER_USER=chevdor ./scripts/build-docker-frontend.sh 
+```