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Author – Madhusudhan Rao

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      • running Apache Kafka for continuous data streaming on Oracle cloud infrastructure
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      • 01 Comprehensive Blog on Oracle Kubernetes Engine – getting started
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      • 07 Pod Configuration using a YAML Deployment
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    • Autonomous Data Warehouse and Analytics
      • 01 Preparing Client Machine
      • 02 Creating Autonomous Data Warehouse Instance
      • 03 Creating Tables into Autonomous Data Warehouse through SQL Developer
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Comprehensive Blog on Dockers running on OCI

  1. Comprehensive Blog on Dockers running on OCI
  2. running a Docker Container on OCI
  3. opening OCI Ports for Docker Containers
  4. Building a Docker Image by using Dockerfile
  5. Committing changes made in a Docker without using Dockerfile
  6. Pushing Docker Images to Docker Hub
  7. DevOps with Github, Docker Hub and Oracle Container Cloud Services
Creating a plane vanilla Ubuntu VM on OCI

please refer the following link how to create Ubuntu 18.04 OCI VM and SSH to the instance

Installing Docker on Ubuntu
 
[email protected]:~/BM$ ssh -i bm_ssh_key [email protected]_ip_address
Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.15.0-36-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Tue Nov  6 07:32:08 UTC 2018
[email protected]:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.1 LTS
Release:	18.04
Codename:	bionic
Add the Docker Repository
[email protected]:~$ 
sudo apt install apt-transport-https ca-certificates curl software-properties-common
Reading package lists... Done
Building dependency tree       
Reading state information... Done
ca-certificates is already the newest version (20180409).
software-properties-common is already the newest version (0.96.24.32.5).
The following package was automatically installed and is no longer required:
  grub-pc-bin
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  libcurl4
The following NEW packages will be installed:
  apt-transport-https
The following packages will be upgraded:
  curl libcurl4
2 upgraded, 1 newly installed, 0 to remove and 57 not upgraded.
Need to get 374 kB of archives.
After this operation, 152 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic-updates
/universe amd64 apt-transport-https all 1.6.6 [1692 B]
Get:2 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic-updates
/main amd64 curl amd64 7.58.0-2ubuntu3.5 [159 kB]
Get:3 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic-updates
/main amd64 libcurl4 amd64 7.58.0-2ubuntu3.5 [214 kB]
Fetched 374 kB in 1s (451 kB/s)  
Selecting previously unselected package apt-transport-https.
(Reading database ... 67088 files and directories currently installed.)
Preparing to unpack .../apt-transport-https_1.6.6_all.deb ...
Unpacking apt-transport-https (1.6.6) ...
Preparing to unpack .../curl_7.58.0-2ubuntu3.5_amd64.deb ...
Unpacking curl (7.58.0-2ubuntu3.5) over (7.58.0-2ubuntu3.3) ...
Preparing to unpack .../libcurl4_7.58.0-2ubuntu3.5_amd64.deb ...
Unpacking libcurl4:amd64 (7.58.0-2ubuntu3.5) over (7.58.0-2ubuntu3.3) ...
Setting up apt-transport-https (1.6.6) ...
Setting up libcurl4:amd64 (7.58.0-2ubuntu3.5) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for man-db (2.8.3-2) ...
Setting up curl (7.58.0-2ubuntu3.5) ...
[email protected]:~$ 
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
OK
[email protected]:~$ 
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable"
Hit:1 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:3 https://download.docker.com/linux/ubuntu bionic InRelease [64.4 kB]      
Hit:4 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:5 http://security.ubuntu.com/ubuntu bionic-security InRelease              
Get:6 https://download.docker.com/linux/ubuntu bionic/stable amd64 Packages [2414 B]
Fetched 66.9 kB in 1s (103 kB/s)                             
Reading package lists... Done
Install Docker and Check Status.
[email protected]:~$ sudo apt update
Hit:1 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:2 https://download.docker.com/linux/ubuntu bionic InRelease                          
Hit:3 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic InRelease                  
Hit:4 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:5 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic-backports InRelease
Reading package lists... Done
Building dependency tree       
Reading state information... Done
57 packages can be upgraded. Run 'apt list --upgradable' to see them.
[email protected]:~$ apt-cache policy docker-ce
docker-ce:
  Installed: (none)
  Candidate: 18.06.1~ce~3-0~ubuntu
  Version table:
     18.06.1~ce~3-0~ubuntu 500
        500 https://download.docker.com/linux/ubuntu bionic/stable amd64 Packages
     18.06.0~ce~3-0~ubuntu 500
        500 https://download.docker.com/linux/ubuntu bionic/stable amd64 Packages
     18.03.1~ce~3-0~ubuntu 500
        500 https://download.docker.com/linux/ubuntu bionic/stable amd64 Packages
[email protected]:~$ sudo apt install docker-ce
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following package was automatically installed and is no longer required:
  grub-pc-bin
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  aufs-tools cgroupfs-mount libltdl7 pigz
The following NEW packages will be installed:
  aufs-tools cgroupfs-mount docker-ce libltdl7 pigz
0 upgraded, 5 newly installed, 0 to remove and 57 not upgraded.
Need to get 40.4 MB of archives.
After this operation, 199 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic/universe amd64 pigz amd64 2.4-1 [57.4 kB]
Get:2 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic/universe amd64 aufs-tools amd64 1:4.9+20170918-1ubuntu1 [104 kB]
Get:3 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic/universe amd64 cgroupfs-mount all 1.4 [6320 B]
Get:4 http://iad-ad-3.clouds.archive.ubuntu.com/ubuntu bionic/main amd64 libltdl7 amd64 2.4.6-2 [38.8 kB]
Get:5 https://download.docker.com/linux/ubuntu bionic/stable amd64 docker-ce amd64 18.06.1~ce~3-0~ubuntu [40.2 MB]
Fetched 40.4 MB in 5s (7587 kB/s)    
Selecting previously unselected package pigz.
(Reading database ... 67092 files and directories currently installed.)
Preparing to unpack .../archives/pigz_2.4-1_amd64.deb ...
Unpacking pigz (2.4-1) ...
Selecting previously unselected package aufs-tools.
Preparing to unpack .../aufs-tools_1%3a4.9+20170918-1ubuntu1_amd64.deb ...
Unpacking aufs-tools (1:4.9+20170918-1ubuntu1) ...
Selecting previously unselected package cgroupfs-mount.
Preparing to unpack .../cgroupfs-mount_1.4_all.deb ...
Unpacking cgroupfs-mount (1.4) ...
Selecting previously unselected package libltdl7:amd64.
Preparing to unpack .../libltdl7_2.4.6-2_amd64.deb ...
Unpacking libltdl7:amd64 (2.4.6-2) ...
Selecting previously unselected package docker-ce.
Preparing to unpack .../docker-ce_18.06.1~ce~3-0~ubuntu_amd64.deb ...
Unpacking docker-ce (18.06.1~ce~3-0~ubuntu) ...
Setting up aufs-tools (1:4.9+20170918-1ubuntu1) ...
Processing triggers for ureadahead (0.100.0-20) ...
Setting up cgroupfs-mount (1.4) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for systemd (237-3ubuntu10.3) ...
Setting up libltdl7:amd64 (2.4.6-2) ...
Processing triggers for man-db (2.8.3-2) ...
Setting up pigz (2.4-1) ...
Setting up docker-ce (18.06.1~ce~3-0~ubuntu) ...
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /lib/systemd/system/docker.service.
Created symlink /etc/systemd/system/sockets.target.wants/docker.socket → /lib/systemd/system/docker.socket.
Processing triggers for ureadahead (0.100.0-20) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for systemd (237-3ubuntu10.3) ...
[email protected]:~$ sudo systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2018-11-06 06:21:47 UTC; 12s ago
     Docs: https://docs.docker.com
 Main PID: 3947 (dockerd)
    Tasks: 23
   CGroup: /system.slice/docker.service
           ├─3947 /usr/bin/dockerd -H fd://
           └─3971 docker-containerd --config /var/run/docker/containerd/containerd.toml

Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.517711032Z" level=info msg="ClientConn switching balancer to \"pick_first\"" m
Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.517770514Z" level=info msg="pickfirstBalancer: HandleSubConnStateChange: 0xc42
Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.518212692Z" level=info msg="pickfirstBalancer: HandleSubConnStateChange: 0xc42
Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.518247036Z" level=info msg="Loading containers: start."
Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.775742140Z" level=info msg="Default bridge (docker0) is assigned with an IP ad
Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.848607563Z" level=info msg="Loading containers: done."
Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.916407938Z" level=info msg="Docker daemon" commit=e68fc7a graphdriver(s)=overl
Nov 06 06:21:46 dockervm dockerd[3947]: time="2018-11-06T06:21:46.916566072Z" level=info msg="Daemon has completed initialization"
Nov 06 06:21:47 dockervm dockerd[3947]: time="2018-11-06T06:21:47.046244194Z" level=info msg="API listen on /var/run/docker.sock"
Nov 06 06:21:47 dockervm systemd[1]: Started Docker Application Container Engine.
Checking Docker Commands
[email protected]:~$ docker run --help

Usage:	docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

Run a command in a new container

Options:
      --add-host list                  Add a custom host-to-IP mapping (host:ip)
  -a, --attach list                    Attach to STDIN, STDOUT or STDERR
      --blkio-weight uint16            Block IO (relative weight), between 10 and 1000, or 0 to disable (default 0)
      --blkio-weight-device list       Block IO weight (relative device weight) (default [])
      --cap-add list                   Add Linux capabilities
      --cap-drop list                  Drop Linux capabilities
      --cgroup-parent string           Optional parent cgroup for the container
      --cidfile string                 Write the container ID to the file
      --cpu-count int                  CPU count (Windows only)
      --cpu-percent int                CPU percent (Windows only)
      --cpu-period int                 Limit CPU CFS (Completely Fair Scheduler) period
      --cpu-quota int                  Limit CPU CFS (Completely Fair Scheduler) quota
      --cpu-rt-period int              Limit CPU real-time period in microseconds
      --cpu-rt-runtime int             Limit CPU real-time runtime in microseconds
  -c, --cpu-shares int                 CPU shares (relative weight)
      --cpus decimal                   Number of CPUs
      --cpuset-cpus string             CPUs in which to allow execution (0-3, 0,1)
      --cpuset-mems string             MEMs in which to allow execution (0-3, 0,1)
  -d, --detach                         Run container in background and print container ID
      --detach-keys string             Override the key sequence for detaching a container
      --device list                    Add a host device to the container
      --device-cgroup-rule list        Add a rule to the cgroup allowed devices list
      --device-read-bps list           Limit read rate (bytes per second) from a device (default [])
      --device-read-iops list          Limit read rate (IO per second) from a device (default [])
      --device-write-bps list          Limit write rate (bytes per second) to a device (default [])
      --device-write-iops list         Limit write rate (IO per second) to a device (default [])
      --disable-content-trust          Skip image verification (default true)
      --dns list                       Set custom DNS servers
      --dns-option list                Set DNS options
      --dns-search list                Set custom DNS search domains
      --entrypoint string              Overwrite the default ENTRYPOINT of the image
  -e, --env list                       Set environment variables
      --env-file list                  Read in a file of environment variables
      --expose list                    Expose a port or a range of ports
      --group-add list                 Add additional groups to join
      --health-cmd string              Command to run to check health
      --health-interval duration       Time between running the check (ms|s|m|h) (default 0s)
      --health-retries int             Consecutive failures needed to report unhealthy
      --health-start-period duration   Start period for the container to initialize before starting health-retries countdown (ms|s|m|h)
                                       (default 0s)
      --health-timeout duration        Maximum time to allow one check to run (ms|s|m|h) (default 0s)
      --help                           Print usage
  -h, --hostname string                Container host name
      --init                           Run an init inside the container that forwards signals and reaps processes
  -i, --interactive                    Keep STDIN open even if not attached
      --io-maxbandwidth bytes          Maximum IO bandwidth limit for the system drive (Windows only)
      --io-maxiops uint                Maximum IOps limit for the system drive (Windows only)
      --ip string                      IPv4 address (e.g., 172.30.100.104)
      --ip6 string                     IPv6 address (e.g., 2001:db8::33)
      --ipc string                     IPC mode to use
      --isolation string               Container isolation technology
      --kernel-memory bytes            Kernel memory limit
  -l, --label list                     Set meta data on a container
      --label-file list                Read in a line delimited file of labels
      --link list                      Add link to another container
      --link-local-ip list             Container IPv4/IPv6 link-local addresses
      --log-driver string              Logging driver for the container
      --log-opt list                   Log driver options
      --mac-address string             Container MAC address (e.g., 92:d0:c6:0a:29:33)
  -m, --memory bytes                   Memory limit
      --memory-reservation bytes       Memory soft limit
      --memory-swap bytes              Swap limit equal to memory plus swap: '-1' to enable unlimited swap
      --memory-swappiness int          Tune container memory swappiness (0 to 100) (default -1)
      --mount mount                    Attach a filesystem mount to the container
      --name string                    Assign a name to the container
      --network string                 Connect a container to a network (default "default")
      --network-alias list             Add network-scoped alias for the container
      --no-healthcheck                 Disable any container-specified HEALTHCHECK
      --oom-kill-disable               Disable OOM Killer
      --oom-score-adj int              Tune host's OOM preferences (-1000 to 1000)
      --pid string                     PID namespace to use
      --pids-limit int                 Tune container pids limit (set -1 for unlimited)
      --platform string                Set platform if server is multi-platform capable
      --privileged                     Give extended privileges to this container
  -p, --publish list                   Publish a container's port(s) to the host
  -P, --publish-all                    Publish all exposed ports to random ports
      --read-only                      Mount the container's root filesystem as read only
      --restart string                 Restart policy to apply when a container exits (default "no")
      --rm                             Automatically remove the container when it exits
      --runtime string                 Runtime to use for this container
      --security-opt list              Security Options
      --shm-size bytes                 Size of /dev/shm
      --sig-proxy                      Proxy received signals to the process (default true)
      --stop-signal string             Signal to stop a container (default "SIGTERM")
      --stop-timeout int               Timeout (in seconds) to stop a container
      --storage-opt list               Storage driver options for the container
      --sysctl map                     Sysctl options (default map[])
      --tmpfs list                     Mount a tmpfs directory
  -t, --tty                            Allocate a pseudo-TTY
      --ulimit ulimit                  Ulimit options (default [])
  -u, --user string                    Username or UID (format: <name|uid>[:<group|gid>])
      --userns string                  User namespace to use
      --uts string                     UTS namespace to use
  -v, --volume list                    Bind mount a volume
      --volume-driver string           Optional volume driver for the container
      --volumes-from list              Mount volumes from the specified container(s)
  -w, --workdir string                 Working directory inside the container
[email protected]:~$ docker

Usage:	docker [OPTIONS] COMMAND

A self-sufficient runtime for containers

Options:
      --config string      Location of client config files (default "/home/ubuntu/.docker")
  -D, --debug              Enable debug mode
  -H, --host list          Daemon socket(s) to connect to
  -l, --log-level string   Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info")
      --tls                Use TLS; implied by --tlsverify
      --tlscacert string   Trust certs signed only by this CA (default "/home/ubuntu/.docker/ca.pem")
      --tlscert string     Path to TLS certificate file (default "/home/ubuntu/.docker/cert.pem")
      --tlskey string      Path to TLS key file (default "/home/ubuntu/.docker/key.pem")
      --tlsverify          Use TLS and verify the remote
  -v, --version            Print version information and quit

Management Commands:
  config      Manage Docker configs
  container   Manage containers
  image       Manage images
  network     Manage networks
  node        Manage Swarm nodes
  plugin      Manage plugins
  secret      Manage Docker secrets
  service     Manage services
  stack       Manage Docker stacks
  swarm       Manage Swarm
  system      Manage Docker
  trust       Manage trust on Docker images
  volume      Manage volumes

Commands:
  attach      Attach local standard input, output, and error streams to a running container
  build       Build an image from a Dockerfile
  commit      Create a new image from a container's changes
  cp          Copy files/folders between a container and the local filesystem
  create      Create a new container
  deploy      Deploy a new stack or update an existing stack
  diff        Inspect changes to files or directories on a container's filesystem
  events      Get real time events from the server
  exec        Run a command in a running container
  export      Export a container's filesystem as a tar archive
  history     Show the history of an image
  images      List images
  import      Import the contents from a tarball to create a filesystem image
  info        Display system-wide information
  inspect     Return low-level information on Docker objects
  kill        Kill one or more running containers
  load        Load an image from a tar archive or STDIN
  login       Log in to a Docker registry
  logout      Log out from a Docker registry
  logs        Fetch the logs of a container
  pause       Pause all processes within one or more containers
  port        List port mappings or a specific mapping for the container
  ps          List containers
  pull        Pull an image or a repository from a registry
  push        Push an image or a repository to a registry
  rename      Rename a container
  restart     Restart one or more containers
  rm          Remove one or more containers
  rmi         Remove one or more images
  run         Run a command in a new container
  save        Save one or more images to a tar archive (streamed to STDOUT by default)
  search      Search the Docker Hub for images
  start       Start one or more stopped containers
  stats       Display a live stream of container(s) resource usage statistics
  stop        Stop one or more running containers
  tag         Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
  top         Display the running processes of a container
  unpause     Unpause all processes within one or more containers
  update      Update configuration of one or more containers
  version     Show the Docker version information
  wait        Block until one or more containers stop, then print their exit codes

Run 'docker COMMAND --help' for more information on a command.
[email protected]:~$ docker docker-subcommand --help

Usage:	docker [OPTIONS] COMMAND

A self-sufficient runtime for containers

Options:
      --config string      Location of client config files (default "/home/ubuntu/.docker")
  -D, --debug              Enable debug mode
  -H, --host list          Daemon socket(s) to connect to
  -l, --log-level string   Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info")
      --tls                Use TLS; implied by --tlsverify
      --tlscacert string   Trust certs signed only by this CA (default "/home/ubuntu/.docker/ca.pem")
      --tlscert string     Path to TLS certificate file (default "/home/ubuntu/.docker/cert.pem")
      --tlskey string      Path to TLS key file (default "/home/ubuntu/.docker/key.pem")
      --tlsverify          Use TLS and verify the remote
  -v, --version            Print version information and quit

Management Commands:
  config      Manage Docker configs
  container   Manage containers
  image       Manage images
  network     Manage networks
  node        Manage Swarm nodes
  plugin      Manage plugins
  secret      Manage Docker secrets
  service     Manage services
  stack       Manage Docker stacks
  swarm       Manage Swarm
  system      Manage Docker
  trust       Manage trust on Docker images
  volume      Manage volumes

Commands:
  attach      Attach local standard input, output, and error streams to a running container
  build       Build an image from a Dockerfile
  commit      Create a new image from a container's changes
  cp          Copy files/folders between a container and the local filesystem
  create      Create a new container
  deploy      Deploy a new stack or update an existing stack
  diff        Inspect changes to files or directories on a container's filesystem
  events      Get real time events from the server
  exec        Run a command in a running container
  export      Export a container's filesystem as a tar archive
  history     Show the history of an image
  images      List images
  import      Import the contents from a tarball to create a filesystem image
  info        Display system-wide information
  inspect     Return low-level information on Docker objects
  kill        Kill one or more running containers
  load        Load an image from a tar archive or STDIN
  login       Log in to a Docker registry
  logout      Log out from a Docker registry
  logs        Fetch the logs of a container
  pause       Pause all processes within one or more containers
  port        List port mappings or a specific mapping for the container
  ps          List containers
  pull        Pull an image or a repository from a registry
  push        Push an image or a repository to a registry
  rename      Rename a container
  restart     Restart one or more containers
  rm          Remove one or more containers
  rmi         Remove one or more images
  run         Run a command in a new container
  save        Save one or more images to a tar archive (streamed to STDOUT by default)
  search      Search the Docker Hub for images
  start       Start one or more stopped containers
  stats       Display a live stream of container(s) resource usage statistics
  stop        Stop one or more running containers
  tag         Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
  top         Display the running processes of a container
  unpause     Unpause all processes within one or more containers
  update      Update configuration of one or more containers
  version     Show the Docker version information
  wait        Block until one or more containers stop, then print their exit codes

Run 'docker COMMAND --help' for more information on a command.
[email protected]:~$ docker info
Got permission denied while trying to connect to the Docker daemon socket 
at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.38/info: 
dial unix /var/run/docker.sock: connect: permission denied
[email protected]:~$ sudo docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 18.06.1-ce
..

Removing  Sudo to run Docker Commands 
[email protected]:~$ sudo usermod -a -G docker $USER
disconnect from SSH session and relogin 
[email protected]:~$ docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 18.06.1-ce
...

Whats Next >> Running your Hello world docker image

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