refactor: fix file condition checks

server/src/containers/cli.ts

@@ -0,0 +1,29 @@
+import { execFile } from 'child_process'
+
+import { buildFileCheckCmd } from '@linux-odyssey/utils'
+import type { IFileCondition } from '@linux-odyssey/models'
+
+function sanitizeId(id: string) {
+  return id.replace(/[^a-zA-Z0-9]/g, '')
+}
+
+// eslint-disable-next-line import/prefer-default-export
+export function checkFile(id: string, file: IFileCondition) {
+  return new Promise((resolve, reject) => {
+    const cmd = buildFileCheckCmd(file)
+    // WARNING: This is vulnerable to command injection
+    execFile(
+      'docker',
+      ['exec', sanitizeId(id), ...cmd],
+      { timeout: 1000 },
+      (error) => {
+        const exists = !error
+        if (exists === file.exists) {
+          resolve(true)
+        } else {
+          reject(new Error('File check failed'))
+        }
+      }
+    )
+  })
+}