62 lines
1.3 KiB
JavaScript
62 lines
1.3 KiB
JavaScript
|
/**
|
||
|
|
* @license Apache-2.0
|
||
|
|
*
|
||
|
|
* Copyright (c) 2021 The Stdlib Authors.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
// MODULES //
|
||
|
|
|
||
|
|
var readFile = require( '@stdlib/fs/read-file' ).sync;
|
||
|
|
var contains = require( './../../contains' );
|
||
|
|
var exists = require( '@stdlib/fs/exists' ).sync;
|
||
|
|
|
||
|
|
|
||
|
|
// VARIABLES //
|
||
|
|
|
||
|
|
var OPTS = {
|
||
|
|
'encoding': 'utf8'
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
// MAIN //
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a boolean indicating if the process is running in a Docker container.
|
||
|
|
*
|
||
|
|
* @returns {boolean} boolean indicating if the process is running in a Docker container
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* var bool = isDocker();
|
||
|
|
* // returns <boolean>
|
||
|
|
*/
|
||
|
|
function isDocker() {
|
||
|
|
var file;
|
||
|
|
if ( exists( '/.dockerenv' ) ) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
file = readFile( '/proc/self/cgroup', OPTS );
|
||
|
|
if ( file instanceof Error ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return contains( file, 'docker' );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// EXPORTS //
|
||
|
|
|
||
|
|
module.exports = isDocker;
|