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Setting up Firewall

Docker requires legacy iptables to configure firewall rules for it's interfaces. To switch iptables to legacy run following command:

update-alternatives --set iptables /usr/sbin/iptables-legacy

Installing Docker

To install docker run following command:

sudo apt update
sudo apt install docker.io

Running Docker

To start the docker daemon run:

sudo systemctl start docker

To check everything is working, run the docker info:

user@imx8mpnavq:~$ sudo docker info
Client:
 Context:    default
 Debug Mode: false

Server:
 Containers: 3
  Running: 0
  Paused: 0
  Stopped: 3
 Images: 1
 Server Version: 20.10.21
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc io.containerd.runc.v2 io.containerd.runtime.v1.linux
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 
 runc version: 
 init version: 
 Security Options:
  seccomp
   Profile: default
  cgroupns
 Kernel Version: 5.15.71-0.0.1-355-07080005-53a60de8e5+g2ef8cc43ed08
 Operating System: Ubuntu 22.04.1 LTS
 OSType: linux
 Architecture: aarch64
 CPUs: 4
 Total Memory: 3.544GiB
 Name: imx8mpnavq
 ID: HGBJ:23QS:K5Z2:TP6B:BULI:PEWO:AD5X:ZMTM:MLKL:XOQQ:GUZO:HCQN
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

Running “Hello, world!”

Pull and run the first container, hello-world:

sudo docker run hello-world

Post-install Configuration

If you want to run docker without root privileges, add user to the docker group:

sudo usermod -aG docker $USER

After you log out and log back, you can run docker commands without sudo:

user@imx8mpnavq:~$ docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
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