Docker

Easy workaround for quirks you will encounter when running crystal in Docker.

What this will fix

1. Unresponsiveness to SIGINT and SIGTERM when running in Docker (Ctrl-c will do nothing)
2. No output from your application to STDOUT or STDERR

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     docker:
       github: repomaa/docker.cr
   

2. Run shards install

Usage

In your application preferably before doing anything else:

require "docker"

Docker.setup

This will setup signal handlers for SIGINT and SIGTERM as well as setup syncing for STDOUT and STDERR.

You can also do just one of those two things by calling either Docker.setup_signal_handling or Docker.setup_io_syncing instead of Docker.setup.

If you found this helpful, consider donating over liberapay!

Contributing

1. Fork it (https://github.com/repomaa/docker.cr/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Joakim Repomaa - creator and maintainer