Welcome to the DockerConfiguration wiki!

Installation:

Access Docker website and download only the binaries for Linux. This binary will be a compressed tar file. Extract this to /usr/local/sbin directory

Docker Daemon Configuration file: Default location /etc/docker/daemon.json Other file location can be specified by --config-file option

/etc/docker/daemon.json

{
   "pidfile"                 : "/var/run/docker.pid",
   "storage-driver"          : "overlay2",
   # On unbuntu 17 
   "graph"                   : "/var/DockerData"
   # On CentOS 7
   "data-root"               : "/var/DockerData",
   "hosts"                   : ["unix:///var/run/docker.sock", "tcp://0.0.0.0:2375"]

}

Parameter	Description
pidfile	dockerd daemon process id file
storage-driver	File System. Default is aufs. overlay2 is the latest which improves performance
data-root	Locally pulled images, volumes and related configuration storage for docker daemon default /var/lib/docker

Systemd configurationn

Add /usr/lib/systemd/system/docker.service

[Unit]
Description=Hemant's Docker daemon
Requires=docker.socket
After=network.target

[Service]
Type=simple
WorkingDirectory=/tmp
Environment=PATH=/bin:/usr/sbin:/sbin:/var/DockerData/bin
ExecStart=/usr/local/sbin/dockerd

[Install]
WantedBy=multi-user.target

Add /usr/lib/systemd/system/docker.socket

[Unit]
Description=Docker Socket for the API
PartOf=docker.service

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
#SocketGroup=docker ( use this group if required )

[Install]
WantedBy=sockets.target