Install Asterisk Docker Image on Ubuntu 20.04

This post presents the instruction to install asterisk docker image on Ubuntu 20.04.
Install Docker

sudo apt -y update upgrade
sudo apt install -y net-tools docker.io

The rbsongcan/rbs-asterisk is a basic asterisk image, which will be used in this post. Following the below steps to have an asterisk server up and running just in few minutes.

docker run -d --network host --name rbs-asterisk rbsongcan/rbs-asterisk

The command will run the asterisk container and bind the IP and ports to docker host’s. And you can check asterisk binding IP and ports by:

netstat -lnp | grep asterisk

udp        0      0 0.0.0.0:4520            0.0.0.0:*                           66351/asterisk
udp        0      0 0.0.0.0:4569            0.0.0.0:*                           66351/asterisk
udp        0      0 0.0.0.0:5000            0.0.0.0:*                           66351/asterisk
udp        0      0 0.0.0.0:5060            0.0.0.0:*                           66351/asterisk
udp        0      0 0.0.0.0:50811           0.0.0.0:*                           66351/asterisk
udp6       0      0 :::36790                :::*                                66351/asterisk
unix  2      [ ACC ]     STREAM     LISTENING     255948   66351/asterisk       /var/run/asterisk/asterisk.ctl

Practically, you need to modify data on asterisk then –mount docker parameter is require:

docker run -d --network host --name rbs-asterisk \
--mount source=rbs-asterisk,target=/etc/asterisk rbsongcan/rbs-asterisk

docker volume inspect rbs-asterisk

[
    {
        "CreatedAt": "2022-06-01T01:37:09Z",
        "Driver": "local",
        "Labels": null,
        "Mountpoint": "/var/lib/docker/volumes/rbs-asterisk/_data",
        "Name": "rbs-asterisk",
        "Options": null,
        "Scope": "local"
    }
]

You can find asterisk configuration files at

/var/lib/docker/volumes/rbs-asterisk/_data

Finally, connect to asterisk console:

 docker exec -it rbs-asterisk asterisk -r

Alternative
Another option that is the original post before rbs-asterisk docker image is developed.

 sudo apt-get update

 sudo apt-get install \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

 echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

 sudo apt-get update
 sudo apt-get install docker-ce docker-ce-cli containerd.io

service docker status

Download Asterisk Docker image

root@zabbix:/etc/docker# docker pull izdock/izpbx-asterisk

root@zabbix:/etc/docker# docker images
REPOSITORY              TAG       IMAGE ID       CREATED       SIZE
izdock/izpbx-asterisk   latest    7370d4e0d5fe   2 weeks ago   1.56GB

(Some image require tag latest, default or a specific name, for ex: docker pull izdock/izpbx-asterisk:tag_name)

Run the containers:

Recommended:

git clone https://github.com/ugoviti/izdock-izpbx.git /opt/izpbx
cd /opt/izpbx
git checkout refs/tags/$(git tag | sort --version-sort | tail -1)
cp default.env .env
#Customize .env variables, specially the security section of default passwords (look bellow for a full variables list):

vim .env
docker-compose up -d
#Wait the pull to finish (~60 seconds with fast internet connections) and point your web browser to the IP address of your docker host and follow initial setup guide

More instruction:
https://hub.docker.com/r/izdock/izpbx-asterisk

Initial FreePBX Setup

http://_docer_host_ip:80/admin

To install and configure a dockerized FreeSwitch on Ubuntu 20 refer to this link:
https://rbsongcan.store/install-freeswitch-from-a-freeswitch-docker-image-fs-rbsongcan/