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Fix Docker Compose 'port 8080 already allocated' Error - How to Fix net::ERR_CERT_AUTHORITY_INVALID on Linux-Nginx SSL Config Test Failure: How to Fix

2026-07-28 11:55:53macos-help

Fix Docker Compose 'port 8080 already allocated' Error - How to Fix net::ERR_CERT_AUTHORITY_INVALID on Linux-Nginx SSL Config Test Failure: How to Fix

Final checklist

Confirm that the same symptom is gone after a restart or refresh.
Keep the smallest working change and undo temporary diagnostic settings.