Block all search engines from crawling your site using robots.txt
Copying files between docker containers
Connecting to your docker based mysql instance.
Link to a free stock photo site I often use
Drupal entity validation and constraints, a good example
Some key docker commands used most often
Example problem: Configuration bootstrap_sass_starterkit.settings depends on the bootstrap_sass_starterkit extension that will not be installed after import.
Solution: delete the bootstrap_sass_starterkit.settings.yml file from the config/sync directory
and if that doesn't work just delete the files from the config directory.
CSS media queries lower px below higher or it doesn't catch it correctly in the cascade.