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Add instructions for running in a docker container #2

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38 changes: 36 additions & 2 deletions TriggerInfo/TriggerInfoAnalyzer/README.md
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Expand Up @@ -85,9 +85,42 @@ Original Source: [Persistent Trigger Results Objects](https://twiki.cern.ch/twik

## Usage Instruction

First you have to create a [VM](http://opendata.cern.ch/VM/CMS "CMS Open Data Portal") from the CMS Open Data website.
### Setup

Then follow these steps:
First you have to either create a [VM](http://opendata.cern.ch/VM/CMS "CMS Open Data Portal") from the CMS Open Data website or install [Docker](https://docs.docker.com/install/).

* If you have installed the VM then continue to the Install instructions below.
* If you have installed Docker then run the following command to pull a docker image, create a container from the image, and run it:

```
$ docker run --rm --cap-add SYS_ADMIN --device /dev/fuse -it clelange/cmssw-cvmfs /bin/bash
Unable to find image 'clelange/cmssw-cvmfs:latest' locally
latest: Pulling from clelange/cmssw-cvmfs
e8114d4b0d10: Already exists
a3eda0944a81: Already exists
1249ddf92fd4: Pull complete
Digest: sha256:ce936f78d5dd244a4ab211de39f596930427b820a52fe6a38a95fcbcee027169
Status: Downloaded newer image for clelange/cmssw-cvmfs:latest
::: cvmfs-config...
::: mounting FUSE...
CernVM-FS: running with credentials 498:497
CernVM-FS: loading Fuse module... done
CernVM-FS: mounted cvmfs on /cvmfs/cms.cern.ch
CernVM-FS: running with credentials 498:497
CernVM-FS: loading Fuse module... done
CernVM-FS: mounted cvmfs on /cvmfs/cms-opendata-conddb.cern.ch
::: mounting FUSE... [done]
::: Mounting CVMFS... [done]
::: Setting up CMS environment...
::: Setting up CMS environment... [done]
[12:45:50] cmsusr@e66b457e0c44 ~ $
```

Once finished, and at the command line prompt, proceed to the Install steps below. If you want to keep the container and its contents for later use then run `docker run` without the `--rm` option.

### Install

To install, follow these steps:

- Create a CMSSW environment:

Expand Down Expand Up @@ -167,6 +200,7 @@ ls -l /cvmfs/

You should now see the `cms-opendata-conddb.cern.ch` link in the `/cvmfs` area.

### Run

- Run the CMSSW executable in the background

Expand Down