Installing Docker

This section provides information on installing Docker.

Before you begin

To install Sametime Meetings, you must have HCL Sametime Community 11.0 FP2 server deployed.

Note:

HCL Sametime Meetings Pre-Release 11.5 uses the following Google public STUN servers by default:
```
stun.l.google.com:19302
stun1.l.google.com:19302
stun2.l.google.com:19302
```
These addresses must be reachable by the container. If they are not, there may be issues joining meetings.
To change the default STUN server see, Configuring alternate STUN servers.

About this task

Commands require root or sudo privileges. Examples assume you are running as root, if not , preface the commands with "sudo".

To deploy Sametime meetings on docker:

Procedure

To install Docker Compose, follow the steps and commands provided in the Install Docker Compose documentation.

Note: If you right click links like Install Docker Compose and choose Open link in Tab you can complete these tasks and then close that tab to start the next step more easily.
Install the latest stable build of Docker Community Edition (CE) 19.x for your OS.

See Install Docker Engine on CentOS for more information on CentOs documentation.

Note: Docker install uses UDP Port 10000 for Media Streams.
Once install is complete, use the following Linux shell command to confirm that Docker is not running:
```
> docker info
```

Start the Docker service:

> service docker start

Additional Docker commands for awareness.

To stop the Docker service:

> service docker stop

To get information about the installed Docker version and whether it is installed properly:

> docker version

For example: The > docker version displays whether an install is successful or not.

> docker version
Client: Docker Engine - Community
Version: 19.03.12
API version: 1.40
Go version: go1.13.10
Git commit: 48a66213fe
Built: Mon Jun 22 15:46:54 2020
OS/Arch: linux/amd64
Experimental: false

Server: Docker Engine - Community
Engine:
Version: 19.03.12
API version: 1.40 (minimum version 1.12)
Go version: go1.13.10
Git commit: 48a66213fe
Built: Mon Jun 22 15:45:28 2020
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.13
GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc:
Version: 1.0.0-rc10
GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd
docker-init:
Version: 0.18.0
GitCommit: fec3683

You can also run a demo application (hello-world):

> docker run hello-world