Citadel Server in Docker

Docker image with Citadel email server using CentOS-7 and supervisor. It's based on million12/ssh docker image with ssh deamon. This image comes with WebCit web interface installed and set to listen on port 80.

Citadel is easy, versatile, and powerful, thanks to its exclusive "rooms" based architecture. No other platform seamlessly combines so many different features using this familiar and consistent metaphor.

### Usage Example docker run command:

docker run \
  -d \
  -h mail.example.org \
  --name citadel \
  --dns 8.8.8.8 \
  -p 25:25 \
  -p 110:110 \
  -p 143:143 \
  -p 465:465 \
  -p 587:587 \
  -p 993:993 \
  -p 995:995 \
  -p 80:8080 \
  -p 10022:22 \
  --env="ROOT_PASS=myrootpassword" \
  --env="PASSWORD=mypassword" \
  --env="DOMAIN=example.org" \
  --env="ATOM_SUPPORT=true" \
  million12/citadel

Environmental Variables

In this Image you can use environmental variables to define domain name, admin password, atom editor support and root ssh password.

ROOT_PASS = root user password (If not specified image will generate random password which can be retrieved usung docker logs docker_name command)
PASSWORD = [email protected] username password for logging to web interface
DOMAIN = user specified domain name
ATOM_SUPPORT = remote atom support for all of us who are using atom editor (disabled by default)

Web Access

Go to http://docker_container_address/.

Username admin
Password Password specified on docker run.

Docker troubleshooting

Use docker command to see if all required containers are up and running:

$ docker ps -a

Check online logs of ssh container:

$ docker logs citadel

Attach to running ssh container (to detach the tty without exiting the shell, use the escape sequence Ctrl+p + Ctrl+q):

$ docker attach citadel

Sometimes you might just want to review how things are deployed inside a running container, you can do this by executing a bash shell through docker's exec command:

docker exec -i -t citadel /bin/bash

History of an image and size of layers:

docker history --no-trunc=true million12/citadel | tr -s ' ' | tail -n+2 | awk -F " ago " '{print $2}'

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Author

Author: Przemyslaw Ozgo [email protected]

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