# Steam in Docker

Tested in Ubuntu 16.04 LTS (64bit) with the following GPU's:

- Intel HD Graphics 3000
- Intel HD Graphics 4400
- NVIDIA's GeForce GTX 560 Ti


## Requirements

- [Docker](https://www.docker.com/)
- (Optional) [Docker Compose](https://docs.docker.com/compose/)

## Limitations

- The version of your Nvidia drivers should match the ones in Dockerfile used to build this image.  
  Currently this image supports these versions of the NVIDIA driver: 304, 340, 361.

# Building and launching Steam

## Build Steam Docker image

You may want to re-run this command later on in order to keep the image updated.

```
docker build -t andrey01/steam .
```


## Launch the Steam in Docker

You can use the following shortcut function and place it to your `~/.bash_aliases` file

```
function docker_helper() { { pushd ~/docker/$1; docker-compose rm -fa "$1"; docker-compose run -d --name "$1" "$@"; popd; } }
function steam() { { docker_helper $FUNCNAME $@; } }
```

Then just issue "steam" command to run Steam in docker.

## Troubleshooting

You might want to modify the `docker-compose.yml` in case of problems, the file should be pretty self explanatory, although you may refer to the official [Docker Compose file reference](https://docs.docker.com/compose/compose-file/)

Also keep in mind to uncomment or/and add your devices to the `devices:` section there.

The best result is when you have a similar to the following output, using the `glxgears` (part of `mesa-utils` package):

If you are getting `segmentation fault` error or Steam does not start, then you could try resetting its config:

```
$ docker-compose run --rm steam --reset
```

## Grsecurity notes

### grsec: TPE

Trusted Path Execution (TPE)

This Steam docker image is working with the grsecurity patched kernel,  
however it requires the following grsecurity flag enabled:

- CONFIG_GRKERNSEC_TPE_INVERT
- CONFIG_GRKERNSEC_TPE_TRUSTED_GID

so that `/proc/sys/kernel/grsecurity/tpe_gid` is accessible for read by root.


### grsec: PaX

Currently it supports Half-Life (CS, ...), CS:GO as described in `launch` file 
that you can edit yourself and rebuild this docker image.


# Links

Below is just bunch of links, someone might find them useful

- https://wiki.ubuntu.com/Valve

- https://developer.valvesoftware.com/wiki/Steam_under_Linux#Ubuntu

- http://media.steampowered.com/client/installer/steam.deb

- http://repo.steampowered.com/steam/archive/precise/steam_latest.deb

- http://repo.steamstatic.com/steam/