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inside Docker

Offical description from the app website

... Source: official-app.site

Usage

This approach is based on Docker Secrets. For this to work you have to enable Docker swarm mode on your host. This can be done with

docker swarm init

Checkout Swarm Mode - Create a swarm for more informations.

Handling secrets

My prefered way of handling credentials is to use Docker secrets.

docker secret create <secret-name> /path/to/your/secret.file

Reference for official app configuration: read the docs.

Storing the stuff

In all cases I don't like to mount my host filesystem into my containers. You shouldn't either, yust because. Use Docker Volumes instead. So let's create one for :

docker volume create <volume-name>

Finally fire it up

All should be setup now. Finally run the container / Swarm service with.

docker service create --name <app-name> \
        --mount type=volume,source=<volume-name>,destination=/home/userless/<mountpoint> \
        --secret source=<secret-name>,target=/home/userless/<secret-mountpoint> \
        bennyli/<app-name>

Log output

To see what's going on run

docker service logs -f <app-name>

Advanced informations

Extend the restart delay

If you use this container in swarm mode (like I described above), the container will automatically restart after one sync with a delay of 5 seconds. This is a sensible default from Docker itself see the docs. As always, you can change these settings by altering the docker service create command. Here is an example to run OfflineIMAP again and again with a delay of 10 minutes.

docker service create --name <app-name> \
        --mount type=volume,source=<volume-name>,destination=/home/userless/<mountpoint> \
        --secret source=<secret-name>,target=/home/userless/<secret-mountpoint> \
        --restart-condition any \
        --restart-delay 10m \
        bennyli/<app-name>

Contribute

The files for this image are hosted GitHub. If you find a bug or like to give a hint for enhancements issue a ticket on GitHub.

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