deploy-docker.js

/**
  Simple automation for Docker deployment with different environment files. Essentially end result
  is to pass a enviroment when calling the file so that the correct compose file is copied into
  the root directory.
 */
(function() {
  'use strict';
  // imports
  const process = require('process');
  const fs = require('fs');
  // list of allowed environment variables, adjust as needed
  const allowedEnvs = ['dev', 'stage', 'prod'];
  // node = argv[0]
  // deploy-docker.js = argv[1]
  let env = process.argv[2];

  if(!allowedEnvs.includes(env)) {
    throw TypeError(`Wrong option passed`);
  }
  // read correspoding file depending on environment variable
  fs.readFile(`${__dirname}/docker_files/docker-compose.${env}.yml`, 'utf-8', (error, data) => {
    if(error) throw Error(error);
    // write `docker-compose.yml` file in parent directory
    fs.writeFile(`${__dirname}/../docker-compose.yml`, data, 'utf-8', error => {
      if(error) throw Error(error);
      // congratulate user for being awesome
      console.log(
        `File 'docker-compose.${env}.yml' succesfully moved to 'docker-compse.yml' in parent directory`
      );
    });
  });

}());