Readme - add link to Docker Hub, split Usage chapter to build & usage

README.md

@@ -11,24 +11,30 @@ Template container for wkhtmltopdf in HTTP server with PHP 7.3.
 - ready to run in serverless environment ([Google Cloud Run](https://cloud.google.com/run/), etc.)
 
 ## Instalation
-1. Clone Git repo
-2. In project directory call `docker build -t wkpdf .`
-3. Use it
+1. Clone Git repo.
+2. In project directory call `docker build -t redbitcz/wkpdf .`
+3. Use it.
 4. Profit!
 
 ## Template philosophy
 This project does not provide finished solution, but only prepared container with
 configured features – feel free to write your own app inside now.
 
+## Build example
+1. Download & install [Docker for you PC](https://www.docker.com/products/docker-desktop). Run it.
+2. Open command line and try to call `docker -v` command – that must print version of installed Docker Desktop service.
+3. Run `docker build -t redbitcz/wkpdf .` *(don't miss the dot at end)*. Docker now start build new Docker image from current
+   directory (especially from [Dockerfile](Dockerfile)) and tag it with name `redbitcz/wkpdf`.
+
+You can also just pull from image [`redbitcz/wkpdf`](https://hub.docker.com/r/redbitcz/wkpdf). 
+
 ## Usage example
-1. Download & install [Docker for you PC](https://www.docker.com/products/docker-desktop).
-2. Open command line and try to call `docker -v` command – that print version of installed Docker Desktop service.
-3. Run `docker build -t wkpdf .` *(don't miss the dot at end)*. Docker now start build new Docker image from current
-   directory (especially from [Dockerfile](Dockerfile)) and tag it with name `wkpdf`.
-4. Run ``docker run -v `pwd`:/out wkpdf wkhtmltopdf https://docs.docker.com/engine/reference/commandline/run/ /out/example.pdf``,
+1. Run ``docker run -v `pwd`:/out redbitcz/wkpdf wkhtmltopdf https://docs.docker.com/engine/reference/commandline/run/ /out/example.pdf``,
    Docker create container from your image and here call `wkhtmltopdf` which create new PDF file `example.pdf` from docker's website.
    Contrainer is removed when `wkhtmltopdf` process ended.
-5. Open and see new PDF `example.pdf` created in project diretory.    
+2. Open and see new PDF `example.pdf` created in current directory.
+
+##    
 
 ### Thanks to
  - @boromino for great [inspiration how to delete more temporary file from container](https://github.com/boromino/php-wkhtmltopdf/blob/master/Dockerfile),