Home / macos-help / Fix 'port already allocated' for Nginx in Docker Compose - Docker Build Context Canceled on WSL2: Causes and Fixes-How to Set Up a Wildcard Subdomain DNS Record in Cloudflare

Fix 'port already allocated' for Nginx in Docker Compose - Docker Build Context Canceled on WSL2: Causes and Fixes-How to Set Up a Wildcard Subdomain DNS Record in Cloudflare

Updated 2026-07-28 14:40:11macos-help

Fix 'port already allocated' for Nginx in Docker Compose - Docker Build Context Canceled on WSL2: Causes and Fixes-How to Set Up a Wildcard Subdomain DNS Record in Cloudflare

Likely symptom

Likely cause

Safe rollback

Verification route

Repeat the original action, not only a simplified test case.
Restart the app or reload the service after configuration changes.