Stefan Hacker
30 lines
509 B
JavaScript
30 lines
509 B
JavaScript
import fs from 'node:fs';
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let isDockerCached;
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function hasDockerEnv() {
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try {
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fs.statSync('/.dockerenv');
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return true;
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} catch {
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return false;
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}
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}
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function hasDockerCGroup() {
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try {
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return fs.readFileSync('/proc/self/cgroup', 'utf8').includes('docker');
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} catch {
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return false;
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}
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}
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export default function isDocker() {
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// TODO: Use `??=` when targeting Node.js 16.
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if (isDockerCached === undefined) {
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isDockerCached = hasDockerEnv() || hasDockerCGroup();
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}
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return isDockerCached;
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}
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