Complete residential site build with Docker Compose & Gitea Actions deployment

node_modules/is-docker/index.js

@@ -0,0 +1,33 @@
+import fs from 'node:fs';
+
+let isDockerCached;
+
+function hasDockerEnv() {
+	try {
+		fs.statSync('/.dockerenv');
+		return true;
+	} catch {
+		return false;
+	}
+}
+
+function hasDockerCGroup() {
+	try {
+		return fs.readFileSync('/proc/self/cgroup', 'utf8').includes('docker');
+	} catch {
+		return false;
+	}
+}
+
+function hasDockerMountInfo() {
+	try {
+		return fs.readFileSync('/proc/self/mountinfo', 'utf8').includes('/docker/containers/');
+	} catch {
+		return false;
+	}
+}
+
+export default function isDocker() {
+	isDockerCached ??= hasDockerEnv() || hasDockerCGroup() || hasDockerMountInfo();
+	return isDockerCached;
+}