By default, Dockron will periodically poll Docker for new containers or schedule changes every minute. You can specify an interval by using the `-watch` flag.
First, be sure your container is something that is not long running and will actually exit when complete. This is for batch runs and not keeping a service running. Docker should be able to do that on it's own with a restart policy.
Create your container and add a label in the form `'dockron.schedule=* * * * *'`, where the value is a valid cron expression (See the section [Cron Expression Formatting](#cron-expression-formatting)).
If you have a long running container that you'd like to schedule an exec command inside of, you can do so with labels as well. Add your job in the form `dockron.<job>.schedule=* * * * *` and `dockeron.<job>.command=echo hello`. Both labels are required to create an exec job.
Eg.
labels:
- "dockron.dates.schedule=* * ** *"
- "dockron.dates.command=date"
_Note: Exec jobs will not log their output anywhere. Not to the host container or to Dockron. It's up to you to deal with this for now. There is also currently no way to health check these._
If you have go on your machine, you can simply use `make build` or `make run` to build and test Dockron. If you don't have go but you do have Docker, you can still build docker images using the provide multi-stage Dockerfile! You can kick that off with `make docker-staged-build`
There is also an example `docker-compose.yml` that will use the multi-stage build to ensure an easy sample. This can be run with `make docker-example`.
