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

https://www.youtube.com/watch?reload=9&v=bb2FCMTcS2w

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

https://medium.com/@ChandeepKhosa/my-experiences-with-drupal-8-configur…

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.

h1 {
font-size: 5.9vw;
}
h2 {
font-size: 3.0vh;
}
p {
font-size: 2vmin;
}