Dependencies.md

@@ -6,12 +6,19 @@ During [CI/CD]() various [docker](https://www.docker.com/) images are used.
 
 * [eltenedor/ubuntu-pandoc](https://hub.docker.com/repository/docker/eltenedor/ubuntu-pandoc)
 
+This image can run `bash` regex commands and [`pandoc`](https://pandoc.org/) for building static html.
+
 ## alpine-ssh
 
 * [eltenedor/alpine-ssh](https://hub.docker.com/repository/docker/eltenedor/alpine-ssh)
 
+This image can run `bash`, `openssh` and `rsync` and is used at review and deployment stage for copying the product.
+
 ## alpine-httpd-ssi
 
 * [eltenedor/alpine-httpd-ssi](https://hub.docker.com/repository/docker/eltenedor/alpine-httpd-ssi)
 
-This file can be used to run a local apache2 webserver with `mod_include` in order to verify the build.
+This file can be used to run a local apache2 webserver with `mod_include` in order to verify the build. To this end build a static webpage and type
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+```bash
+docker run ...
+```
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