rancher-deploy - A quick script I wrote to deploy services to rancher in one command... will finish it up and deploy via NPM soon...

rancher-deploy.js

#!/usr/bin/env node

process.env.RANCHER_URL = '<your project URL here>';
process.env.RANCHER_ACCESS_KEY = '<your access key here>';
process.env.RANCHER_SECRET_KEY = '<your secret key here>';

var spawn = require('child_process').spawn;
var exec = require('child_process').exec;
var path = require('path');
var fs = require('fs')
var readYaml = require('read-yaml');
var semver = require('semver');
var writeYaml = require('write-yaml');
var request = require('request');
var generate = require('project-name-generator');
var service = process.argv[2];
var version = process.argv[3];
var latestBuildName;

request.get(`${process.env.RANCHER_URL}/services`, {
    'auth': {
        'user': process.env.RANCHER_ACCESS_KEY,
        'pass': process.env.RANCHER_SECRET_KEY,
        'sendImmediately': true
    }
}, function(err, response, body) {
    var services = JSON.parse(body).data;
    var thisAppsActiveServiceName = services.filter(function(loadedService) {
            return loadedService.name.startsWith(service);
        })[0];
        thisAppsActiveServiceName = thisAppsActiveServiceName ? thisAppsActiveServiceName.name : undefined;
    var thisAppsVersionNumber;

    if(thisAppsActiveServiceName) {
        thisAppsVersionNumber = thisAppsActiveServiceName.match(/([0-9].[0-9].[0-9])(-?[^-]+)?/);
    }

    readYaml('docker-compose.yml', function(err, data) {
        if (err) throw err;
        if(!data[service]) throw "invalid docker-compose.yml, no service named " + service + " was found";
        if(!version) {

            version = '00' + generate({ words: 2 }).raw.join('');

        }
        latestBuildName = `${service}${version}`;

        // if the latest tag is not deployed yet
        if((thisAppsActiveServiceName && !thisAppsVersionNumber) ||
            thisAppsActiveServiceName && thisAppsVersionNumber && semver.satisfies(version, `>${thisAppsVersionNumber[0]}`)) {
                console.log('Upgrading app...')

            data[latestBuildName] = data[service];
            data[thisAppsActiveServiceName] = {
                old: 'true'
            };
            writeYaml('upgrade.yml', data, function(err) {
                if (err) console.log(err);

                exec('rancher-compose pull --cached', function (error, stdout, stderr) {
                    var child = spawn('rancher-compose', [
                        '--file', 'upgrade.yml',
                        'upgrade', thisAppsActiveServiceName, latestBuildName,
                        '--pull', '--cleanup'
                    ]);

                    child.stdout.pipe(process.stdout);
                });
            });
        } else if(!thisAppsActiveServiceName) {
            console.log('Creating app on rancher');
            console.log('Pulling updated images if we need to...');
            exec('rancher-compose pull --cached', function (error, stdout, stderr) {

                var child = spawn('rancher-compose', [
                    'up', '-d'
                ]);
                child.stdout.pipe(process.stdout);

            });
        } else {
            console.log('Nothing to do...')
        }
    });
});