What's Changed

• Docker containers did not build correctly because jq (JSON query) needed make on arm v6 and arm v7 (rPi for example)
• Added test to test build docker containers on changes to critical files
• Don't use default Requests user-agent and accept headers in playwright+selenium requests, breaks sites such as united.com - by @dgtlmoon in #1004

Full Changelog: https://github.com/dgtlmoon/changedetection.io/compare/0.39.20...0.39.20.1