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+Why Use Docker with R? A DevOps Perspective
+============================================================
+
+ [![opencpu logo](https://i1.wp.com/www.opencpu.org/images/stockplot.png?w=456&ssl=1)][11] 
+
+There have been several blog posts going around about why one would use Docker with R.
+In this post I’ll try to add a DevOps point of view and explain how containerizing
+R is used in the context of the OpenCPU system for building and deploying R servers.
+
+> Has anyone in the [#rstats][2] world written really well about the *why* of their use of Docker, as opposed to the the *how*?
+> 
+> — Jenny Bryan (@JennyBryan) [September 29, 2017][3]
+
+### 1: Easy Development
+
+The flagship of the OpenCPU system is the [OpenCPU server][12]:
+a mature and powerful Linux stack for embedding R in systems and applications.
+Because OpenCPU is completely open source we can build and ship on DockerHub. A ready-to-go linux server with both OpenCPU and RStudio
+can be started using the following (use port 8004 or 80):
+
+```
+docker run -t -p 8004:8004 opencpu/rstudio
+
+```
+
+Now simply open [http://localhost:8004/ocpu/][13] and
+[http://localhost:8004/rstudio/][14] in your browser!
+Login via rstudio with user: `opencpu` (passwd: `opencpu`) to build or install apps.
+See the [readme][15] for more info.
+
+Docker makes it easy to get started with OpenCPU. The container gives you the full
+flexibility of a Linux box, without the need to install anything on your system.
+You can install packages or apps via rstudio server, or use `docker exec` to a
+root shell on the running server:
+
+```
+# Lookup the container ID
+docker ps
+
+# Drop a shell
+docker exec -i -t eec1cdae3228 /bin/bash
+
+```
+
+From the shell you can install additional software in the server, customize the apache2 httpd
+config (auth, proxies, etc), tweak R options, optimize performance by preloading data or
+packages, etc.
+
+### 2: Shipping and Deployment via DockerHub
+
+The most powerful use if Docker is shipping and deploying applications via DockerHub. To create a fully standalone
+application container, simply use a standard [opencpu image][16]
+and add your app.
+
+For the purpose of this blog post I have wrapped up some of the [example apps][17] as docker containers by adding a very simple `Dockerfile` to each repository. For example the [nabel][18] app has a [Dockerfile][19] that contains the following:
+
+```
+FROM opencpu/base
+
+RUN R -e 'devtools::install_github("rwebapps/nabel")'
+
+```
+
+It takes the standard [opencpu/base][20]
+image and then installs the nabel app from the Github [repository][21].
+The result is a completeley isolated, standalone application. The application can be
+started by anyone using e.g:
+
+```
+docker run -d 8004:8004 rwebapps/nabel
+
+```
+
+The `-d` daemonizes on port 8004.
+Obviously you can tweak the `Dockerfile` to install whatever extra software or settings you need
+for your application.
+
+Containerized deployment shows the true power of docker: it allows for shipping fully
+self contained appliations that work out of the box, without installing any software or
+relying on paid hosting services. If you do prefer professional hosting, there are
+many companies that will gladly host docker applications for you on scalable infrastructure.
+
+### 3 Cross Platform Building
+
+There is a third way Docker is used for OpenCPU. At each release we build
+the `opencpu-server` installation package for half a dozen operating systems, which
+get published on [https://archive.opencpu.org][22].
+This process has been fully automated using DockerHub. The following images automatically
+build the enitre stack from source:
+
+*   [opencpu/ubuntu-16.04][4]
+
+*   [opencpu/debian-9][5]
+
+*   [opencpu/fedora-25][6]
+
+*   [opencpu/fedora-26][7]
+
+*   [opencpu/centos-6][8]
+
+*   [opencpu/centos-7][9]
+
+DockerHub automatically rebuilds this images when a new release is published on Github.
+All that is left to do is run a [script][23]
+which pull down the images and copies the `opencpu-server`binaries to the [archive server][24].
+
+--------------------------------------------------------------------------------
+
+via: https://www.r-bloggers.com/why-use-docker-with-r-a-devops-perspective/
+
+作者：[Jeroen Ooms][a]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]:https://www.r-bloggers.com/author/jeroen-ooms/
+[1]:https://www.opencpu.org/posts/opencpu-with-docker/
+[2]:https://twitter.com/hashtag/rstats?src=hash&ref_src=twsrc%5Etfw
+[3]:https://twitter.com/JennyBryan/status/913785731998289920?ref_src=twsrc%5Etfw
+[4]:https://hub.docker.com/r/opencpu/ubuntu-16.04/
+[5]:https://hub.docker.com/r/opencpu/debian-9/
+[6]:https://hub.docker.com/r/opencpu/fedora-25/
+[7]:https://hub.docker.com/r/opencpu/fedora-26/
+[8]:https://hub.docker.com/r/opencpu/centos-6/
+[9]:https://hub.docker.com/r/opencpu/centos-7/
+[10]:https://www.r-bloggers.com/
+[11]:https://www.opencpu.org/posts/opencpu-with-docker
+[12]:https://www.opencpu.org/download.html
+[13]:http://localhost:8004/ocpu/
+[14]:http://localhost:8004/rstudio/
+[15]:https://hub.docker.com/r/opencpu/rstudio/
+[16]:https://hub.docker.com/u/opencpu/
+[17]:https://www.opencpu.org/apps.html
+[18]:https://rwebapps.ocpu.io/nabel/www/
+[19]:https://github.com/rwebapps/nabel/blob/master/Dockerfile
+[20]:https://hub.docker.com/r/opencpu/base/
+[21]:https://github.com/rwebapps
+[22]:https://archive.opencpu.org/
+[23]:https://github.com/opencpu/archive/blob/gh-pages/update.sh
+[24]:https://archive.opencpu.org/
+[25]:https://www.r-bloggers.com/author/jeroen-ooms/