In the previous section, we installed the Docker Engine by manually configuring the GPG key, APT repository, and so on. However, the Docker community has taken a step forward by hiding all these details in an automated install script. This script enables the installation of Docker on most popular Linux distributions, either through the curl command or through the wget command, as shown here:
- For the curl command:
$ sudo curl -sSL https://get.docker.io/ | sh
- For the wget command:
$ sudo wget -qO- https://get.docker.io/ | sh
The preceding automated script approach enforces AUFS as the underlying Docker filesystem because AUFS is preferred over devicemapper. This script probes the AUFS driver, and then installs it automatically if it is not found in the system. In addition, it also conducts some basic tests upon installation for verifying the sanity.