Add vagga article

blog/trying-vagga-2015-03-21.markdown

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+Trying Vagga on For Size
+========================
+
+[Vagga](https://github.com/tailhook/vagga) is a containerization tool like 
+Docker, Rocket, etc but with one major goal that is highly ambitious and really 
+worth mentioning. Its goal is to be a single userspace binary without a suid 
+bit or a daemon running as root.
+
+However, the way it does this seems to be highly opinionated and there are some 
+things which annoy me. Let's go over the basics:
+
+All Vagga Images Are Local To The Project
+-----------------------------------------
+
+There is no "global vagga cache". Every time I want to make a new project 
+folder with an ubuntu image I have to wait the ~15 minutes it takes for Ubuntu 
+to download on my connection (Comcast). As such I've been forced to use Alpine.
+
+No Easy Way To Establish Inheritance From Common Code
+-----------------------------------------------------
+
+With Docker I can create an image `xena/lapis` and have it contain all of the 
+stuff needed for [lapis](http://leafo.net/lapis) applications to run. With 
+Vagga I currently have to constantly reinvent the setup for this or risk 
+copying and pasting code everywhere
+
+Multiple Containers Can Be Defined In The Same File
+---------------------------------------------------
+
+This is a huge plus. The way this all is defined is much more sane than Fig or 
+Docker compose. It's effortless where the Docker workflow was kinda painful. 
+However this is a bittersweet advantage as:
+
+Vagga Containers Use The Same Network Stack As The Host
+-------------------------------------------------------
+
+Arguably this is because you need root permissions to do things like that with 
+the IP stack in a new namespace, but really? It's just inconvenient to have to 
+wrap Vagga containers in Docker or the like just to be able to run things 
+without the containers using TCP ports on the host up.
+
+http://vagga.readthedocs.org/en/latest/network.html is interesting.
+
+Overall, Vagga looks very interesting and I'd like to see how it turns out.
+
+---
+
+Interesting Links
+-----------------
+
+- https://www.joyent.com/blog/dockers-killer-feature
+