Edited wiki page Docker through web user interface.

Docker.wiki

diff --git a/Docker.wiki b/Docker.wiki
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-#summary One-sentence summary of this page.
+#summary Melange and Docker
 
 = Introduction =
 
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 = Details =
 
-Add your content here.  Format your content with:
-  * Text in *bold* or _italic_
-  * Headings, paragraphs, and lists
-  * Automatic links to other wiki pages
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+   * run `make docker` to enter the pre-built docker container.
+
+   * run `make local-docker` to build a new local docker image.
+
+   * Use http://askubuntu.com/questions/477551/how-can-i-use-docker-without-sudo so you don't have to use root to access the container.
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