dockership

Dockership

Scriptable docker management tool build upon Docker remote API.

Usage

1. Get Start

var Dockership = require('dockership');

var dockerConfig = {
  ca:   'path/to/ca', // Can also be a Buffer of ca.pem
  cert: 'path/to/cert',
  key:  'path/to/key',
  host: '0.0.0.0',
  port: 2376
};

var ship = new Dockership({
  docker: dockerConfig, // Config obj used to construct docker remote client
  buildContext: 'path/to/dockerfile/parent/dir', // Absolute, or relative to cwd
  meta: metaConfig // Information describing docker images and how to run containers
});

2. API

Dockership use dockerode and bluebird internally. All API calls will return a bluebird promise.

images method

Resolve with remote images specified by metaConfig.

ship.images().then(function (images) {
  console.log(images); // JSON
});

containers method

ship.containers().then(function (containers) {
  console.log(containers); // JSON
});

build method

ship.build().then(function (image) {
  console.log(image); // JSON
});

ship instance is an EventEmitter instance. You can listen to events emitted during build process.

ship.on('buildMessage', function (obj) {
  // Log something
});

Dockership comes with logger helper to help log buildMessage to console.

var logger = Dockership.makeLogger();
ship.on('buildMessage', logger);

logger can be customized by passing a modifier function:

var logger = Dockership.makeLogger(function (str) {
  return 'Prefix ' + str;
});

ship.on('buildMessage', logger); // Prepend "Prefix " to every line of message

start method

ship.start().then(function (container) {
  console.log(container); // JSON
});

By default, start will start stopped container or create container from image specified in metaConfig. If such container or image cannot be found, start will reject.

stop method

Stop will stop all containers match the description in metaConfig.

ship.stop().then(function (containers) {
  console.log(containers); // JSON
});

exec method

Execute command inside container. Reject if running container cannot be found.

ship.exec().then(function () {
  // No argument
});

this context

All promise callback have this refer to current ship instance.

ship
  .build()
  .then(function (image) {
    return this.start();
  })
  .then(function (container) {

  });

TODO

• Improve event emitting, especially error emitting.