I have installed HACS for Home Assistant in a docker container. Is there a way to execute a command in the bash of the container that will run all pending updates in HACS? What would this command be?
Short answer: No
Longer answer: The developer of HACS removed the Update all button in 1.0 because too many people were blindly updating every custom component, card, etc - without reading any of the release notes. The results, predictably, were broken installs because people couldn’t be bothered to read the breaking changes. Giving people the ability to do that on the command line, where there’s no link to the release notes, even more dangerous.