Adding glances system monitoring tool

glances/Dockerfile

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+# Run glances in a container
+# https://github.com/nicolargo/glances
+#
+# docker run --rm -it \
+# --pid host \
+# --ipc host \
+# --net host \
+# --privileged \
+# --name glances \
+# infoslack/glances
+
+FROM python:latest
+MAINTAINER Daniel Romero <infoslack@gmail.com>
+
+ENV VERSION 2.4.2
+RUN curl -L "https://github.com/nicolargo/glances/archive/v${VERSION}.tar.gz" \
+  -o glances.tar.gz \
+  && tar -zxvf glances.tar.gz
+
+WORKDIR glances-$VERSION
+RUN python setup.py install
+
+CMD [ "glances" ]

glances/README.md

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+Glances - An eye on your system
+================================
+
+[Glances](https://github.com/nicolargo/glances) is a cross-platform
+curses-based system monitoring tool written in Python.
+
+### Run in a container
+
+For the standalone mode, just run:
+```
+$ docker run --rm -it --pid=host --ipc=host --net=host --privileged infoslack/glances
+```
+
+### Using
+
+For the Web server mode, run:
+```
+$ glances -w
+```
+and enter the URL `http://<ip>:61208` in your favorite web browser.
+
+For the client/server mode, run:
+```
+$ glances -s
+```
+on the server side and run:
+```
+$ glances -c <ip>
+```
+on the client one.