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page_title: Installation from Binaries
page_description: Instructions for installing Docker as a binary. Mostly meant for hackers who want to try out Docker on a variety of environments.
page_keywords: binaries, installation, docker, documentation, linux
# Binaries
**This instruction set is meant for hackers who want to try out Docker
on a variety of environments.**
Before following these directions, you should really check if a packaged
version of Docker is already available for your distribution. We have
packages for many distributions, and more keep showing up all the time!
## Check runtime dependencies
To run properly, docker needs the following software to be installed at
runtime:
- iptables version 1.4 or later
- Git version 1.7 or later
- procps (or similar provider of a "ps" executable)
- XZ Utils 4.9 or later
- a [properly mounted](
https://github.com/tianon/cgroupfs-mount/blob/master/cgroupfs-mount)
cgroupfs hierarchy (having a single, all-encompassing "cgroup" mount
point [is](https://github.com/dotcloud/docker/issues/2683)
[not](https://github.com/dotcloud/docker/issues/3485)
[sufficient](https://github.com/dotcloud/docker/issues/4568))
## Check kernel dependencies
Docker in daemon mode has specific kernel requirements. For details,
check your distribution in [*Installation*](../#installation-list).
In general, a 3.8 Linux kernel (or higher) is preferred, as some of the
prior versions have known issues that are triggered by Docker.
Note that Docker also has a client mode, which can run on virtually any
Linux kernel (it even builds on OS X!).
## Get the docker binary:
$ wget https://get.docker.io/builds/Linux/x86_64/docker-latest -O docker
$ chmod +x docker
> **Note**:
> If you have trouble downloading the binary, you can also get the smaller
> compressed release file:
> [https://get.docker.io/builds/Linux/x86_64/docker-latest.tgz](
> https://get.docker.io/builds/Linux/x86_64/docker-latest.tgz)
## Run the docker daemon
# start the docker in daemon mode from the directory you unpacked
$ sudo ./docker -d &
## Giving non-root access
The `docker` daemon always runs as the root user, and the `docker`
daemon binds to a Unix socket instead of a TCP port. By default that
Unix socket is owned by the user *root*, and so, by default, you can
access it with `sudo`.
If you (or your Docker installer) create a Unix group called *docker*
and add users to it, then the `docker` daemon will make the ownership of
the Unix socket read/writable by the *docker* group when the daemon
starts. The `docker` daemon must always run as the root user, but if you
run the `docker` client as a user in the *docker* group then you don't
need to add `sudo` to all the client commands.
> **Warning**:
> The *docker* group (or the group specified with `-G`) is root-equivalent;
> see [*Docker Daemon Attack Surface*](
> /articles/security/#dockersecurity-daemon) details.
## Upgrades
To upgrade your manual installation of Docker, first kill the docker
daemon:
$ killall docker
Then follow the regular installation steps.
## Run your first container!
# check your docker version
$ sudo ./docker version
# run a container and open an interactive shell in the container
$ sudo ./docker run -i -t ubuntu /bin/bash
Continue with the [User Guide](/userguide/).
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