container: pre-built Vagrant box and docker container

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+
+[comments]: The original author of Mini-NDN docker is Md Ashiqur Rahman (marahman@email.arizona.edu)
+
+| :exclamation:  Mini-NDN docker is in experimental phase, it uses older version of Mini-NDN and is incompatible with the current version |
+|-----------------------------------------------------------------------------------------------------------------------------------------|
+
+### `docker build` or `docker pull`
+
+The [Dockerfile](https://github.com/ashiqopu/docker-minindn/blob/master/Dockerfile) can be used directly to `build` an image from scratch.
+
+* Build with `Dockerfile`:
+  * Open terminal and use the following command:
+    ```bash
+    git clone https://github.com/ashiqopu/docker-minindn
+    cd docker-minindn
+    ```
+  * Type and enter.
+    ```bash
+    docker build -t minindn .
+    ```
+  * You can then access the container through shell with,
+    ```bash
+    docker run -m 4g --cpus=4 -it --rm --privileged \
+           -v /lib/modules:/lib/modules \
+           minindn bin/bash
+    ```
+
+* Pull from hub:
+  * Open a terminal and type:
+    ```bash
+    docker pull marahman/minindn:v0.2
+    ```
+
+  * You can then access the container through shell with,
+    ```bash
+    docker run -m 4g --cpus=4 -it --rm --privileged -e DISPLAY \
+              -v /tmp/.X11-unix:/tmp/.X11-unix \
+              -v /lib/modules:/lib/modules \
+              marahman/minindn:v0.2 bin/bash
+    ```
+
+### Notes:
+
+* Memory (-m), CPU (--cpus) are recommended by Mini-NDN.
+* `--privileged` is mandatory for underlying [Mininet](http://mininet.org/) to utilize virtual switch
+* Root directory on `run` is `/mini-ndn` containing the installation and examples.
+* GUI may not work for now due to docker and xterm setup issues and is independent from Mini-NDN.
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