| 1 | var fs = require('fs');
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| 2 | var path = require('path');
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| 3 | var _ = require('lodash');
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| 4 | var exists = require('is-there');
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| 5 |
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| 6 | const DEFAULT_ENGINE = '0.10.38';
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| 7 |
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| 8 | module.exports = {
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| 9 | name: 'node',
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| 10 | detect: function(dir) {
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| 11 | if (exists.sync(path.resolve(dir, 'package.json'))) return true;
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| 12 | if (exists.sync(path.resolve(dir, 'server.js'))) return true;
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| 13 | },
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| 14 | getDockerfile: function(dir) {
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| 15 | var templatePath = path.resolve(__dirname, 'Dockerfile.t');
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| 16 | var template = fs.readFileSync(templatePath, { encoding: 'utf8' });
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| 17 | var compiled = _.template(template);
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| 18 | var pkg = path.resolve(dir, 'package.json');
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| 19 | var engine = getEngines(pkg).node || DEFAULT_ENGINE;
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| 20 | return compiled({
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| 21 | node_engine: engine
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| 22 | });
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| 23 | }
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| 24 | };
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| 25 |
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| 26 | function getEngines(pkg) {
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| 27 | try {
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| 28 | var contents = fs.readFileSync(pkg, { format: 'utf8' });
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| 29 | var json = JSON.parse(contents);
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| 30 | return json.engines || {};
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| 31 | }
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| 32 | catch (e) {
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| 33 | return {};
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| 34 | }
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| 35 | }
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