fix: update CLIFileExistenceChecker to accept containerId in constructor

server/src/containers/cli.ts

@@ -7,26 +7,21 @@ 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: IFileInput) {
-  return new Promise<boolean>((resolve) => {
-    const cmd = buildFileCheckCmd(file)
-    // WARNING: This is vulnerable to command injection
-    execFile(
-      'docker',
-      ['exec', sanitizeId(id), ...cmd],
-      { timeout: 1000 },
-      (error) => {
-        const exists = !error
-        resolve(exists)
-      }
-    )
-  })
-}
-
 export class CLIFileExistenceChecker implements IFileExistenceChecker {
-  // eslint-disable-next-line class-methods-use-this
-  async exists(file: IFileInput) {
-    return checkFile(file.path, file)
+  constructor(private readonly containerId: string) {}
+  exists(file: IFileInput) {
+    return new Promise<boolean>((resolve) => {
+      const cmd = buildFileCheckCmd(file)
+      // WARNING: This is vulnerable to command injection
+      execFile(
+        'docker',
+        ['exec', sanitizeId(this.containerId), ...cmd],
+        { timeout: 1000 },
+        (error) => {
+          const exists = !error
+          resolve(exists)
+        }
+      )
+    })
   }
 }