adding release post

Author: vsoch

_posts/releases/2017-10-02-release-2.4.md

@@ -0,0 +1,54 @@
+---
+title:  "Singularity 2.4 Release"
+category: releases
+permalink: "release-2-4"
+version: "2.4"
+---
+
+Singularity 2.4 is relesed, and here are the important notes for you to know about!
+
+<img src="/assets/img/posts/releases/singularity-egg-easy.png">
+
+
+**Singularity Build**
+Building an image is now more intuitive with the introduction of our `build` command. You don't need to worry about using `create`, or `bootstrap`, you just build. It looks like this:
+
+```
+sudo singularity build container.simg Singularity
+```
+
+If you are tired of needing to estimate your image size, that issue goes away with build. The default format for a Singularity image base is now a smaller, compressed file format called **SquashFS**.  This format is also a much better fit for reproducible containers, as it is immutable. For more details, see our [build](/docs-build) documentation.
+
+**Build Bases**
+We originally supported just using an existing distribution package or docker as a base for building images. With 2.4, we have extended that set to include another Singularity image (`localimage`), a Singularity Hub or Registry image (`shub`) or the host operating system (`self`).
+
+**Instance Support**
+Singularity now has support for instances, which means services! Images instances can be started, stopped, and listed. Along with instances comes **Network Namespace Isolation**. We are excited to see the kinds of use cases that this will afford for our users. 
+
+**Singularity Registry**
+If you want to host your own Registry, we listened and you are in luck! Singularity <a href="https://www.github.com/singularityhub/sregistry">Registry</a> is ready for your use, along with a <a href="https://singularityhub.github.io/containers">portal</a> for you to "register your registry" to make it easier to share your images. Singularity Hub, along with improved building and updated builders, will follow this release.
+
+**Internal Modalarity**
+This release includes support for the <a href="/docs-apps">Standard Container Integration Format (SCI-F)</a> that makes it easy for you to produce single, internally modular and programmatically discoverage containers. More information is provided on it's <a href="https://containers-ftw.github.io/SCI-F/">main site</a>.
+
+**Better Documentation**
+We've added an entire page on the different customizations you can do to the [build environment](/build-environment), including changing the cache and specifying credentials for Docker. 
+
+**Deprecated**
+We are deprecating the original `create` command to be replaced with `image.create`, along with `bootstrap` in favor with build. These commands will still work for 2.4, however we recommend you start testing the updated ones.
+
+In addition, here are some tiny changes for your information!
+
+- Persistent Overlay
+- Container checks
+- Tests for instance support
+- Wrapper for create
+- Group instance commands
+- Group image commands
+- Bash completion updates
+
+For the full release announcement and downloads, please see <a target="_blank" href="https://github.com/singularityware/singularity/releases/tag/2.4">the release on Github</a>.
+
+Wowee, way to go team, contributors, and the community! Please report any issues or questions that you might have to <a href="https://github.com/singularityware/singularity/issues/new" target="_blank">our issue board</a>.
+
+Thank you!